View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 10.0
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Red Lion
Equipment: Sixnet RTU
Vulnerabilities: Authentication Bypass using an Alternative Path or Channel, Exposed Dangerous Method or Function

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an unauthenticated attacker to execute commands with high privileges.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Red Lion products are affected:

ST-IPm-8460: Firmware 6.0.202 and later
ST-IPm-6350: Firmware version 4.9.114 and later
VT-mIPm-135-D: Firmware version 4.9.114 and later
VT-mIPm-245-D: Firmware version 4.9.114 and later
VT-IPm2m-213-D: Firmware version 4.9.114 and later
VT-IPm2m-113-D: Firmware version 4.9.114 and later

3.2 Vulnerability Overview

3.2.1 AUTHENTICATION BYPASS USING AN ALTERNATIVE PATH OR CHANNEL CWE-288

Red Lion SixTRAK and VersaTRAK Series RTUs with authenticated users enabled (UDR-A) any Sixnet UDR message will meet an authentication challenge over UDP/IP. When the same message is received over TCP/IP the RTU will simply accept the message with no authentication challenge.

CVE-2023-42770 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

3.2.2 EXPOSED DANGEROUS METHOD OR FUNCTION CWE-749

When user authentication is not enabled the shell can execute commands with the highest privileges. Red Lion SixTRAK and VersaTRAK Series RTUs with authenticated users enabled (UDR-A) any Sixnet UDR message will meet an authentication challenge over UDP/IP. When the same message comes over TCP/IP the RTU will simply accept the message with no authentication challenge.

CVE-2023-40151 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Nitsan Litov of Claroty Research – Team82 reported these vulnerabilities to CISA.

4. MITIGATIONS

Red Lion recommends users apply the latest patches to their products.

Red Lion recommends users apply additional mitigations to help reduce the risk:

Enable user authentication, see Red Lion instructions.

Blocking all or most Sixnet UDR messages over TCP/IP will eliminate authentication bypass. Sixnet UDR messages over TCP/IP will be ignored.

To block all Sixnet UDR messages over TCP/IP install Patch1_tcp_udr_all_blocked.tar.gz.

ST-IPm-8460 – Install 8313_patch1_tcp_udr_all_blocked.tar.gz
ST-IPm-6350/VT-mIPm-245-D/VT-mIPm-135-D/VT-IPm2m-213-D/VT-IPm2m-113-D – Install 855_patch1_tcp_udr_all_blocked.tar.gz

To block all Sixnet UDR messages except I/O commands over TCP/IP and UDP/IP install Patch2_io_open.tar.gz.

ST-IPm-8460 – Install 8313_patch2_io_open.tar.gz
ST-IPm-6350/VT-mIPm-245-D/VT-mIPm-135-D/VT-IPm2m-213-D/VT-IPm2m-113-D – Install 855_patch2_io_open.tar.gz

To Block all Sixnet UDR messages over TCP/IP:

Enable iptables rules to block TCP/IP traffic.
In the Sixnet I/O Tool Kit go to Configuration>Configuration Station/Module>”Ports” tab>Security.
Select the “Load the this file with each station load” radio button to load a custom rc.firewall configuration file. The rules below will allow all other traffic except Sixnet UDR over TCP/IP. Please Note: Two rules that are added in by default were removed because they will block all traffic going into the interface.

Remove these rules from the default rc.firewall file:

iptables -P INPUT DROP (Drops everything coming in)
iptables -P FORWARD DROP (Drops everything in FORWARD chain)

Add one DROP rule which will drop all TCP/IP packet coming on UDR port 1594 by typing the following commands:

insmodip_tables (Initialization)
insmodiptable_filter (Initialization)
insmodip_conntrack (Initialization)
insmodiptable_nat (Initialization)
iptables -F INPUT (Flushes INPUT chain)
iptables -F OUTPUT (Flushes OUTPUT chain)
iptables -F FORWARD (Flushes FORWARD chain)
iptables -Z (Zero counters)
iptables -P OUTPUT ACCEPT (Drops everything coming in, everything in FORWARD chain, and accepts everything going out)
iptables -A INPUT -p tcp –dport 1594 -j DROP (Allows local traffic and blocks all TCP traffic coming from 1594)

For installation instructions see Red Lion’s support page.

For more information, please refer to Red Lion’s security bulletin.

CISA recommends users take defensive measures to minimize the risk of exploitation of this these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting this these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 6.8
ATTENTION: Exploitable remotely
Vendor: Siemens
Equipment: Mendix 7, Mendix 8, Mendix 9, Mendix 10
Vulnerability: Authentication Bypass by Capture-Replay

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow authenticated attackers to access or modify objects without proper authorization or escalate privileges in the context of the vulnerable app.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Siemens Mendix Applications, are affected:

Mendix Applications using Mendix 7: all versions prior to V7.23.37
Mendix Applications using Mendix 8: all versions prior to V8.18.27
Mendix Applications using Mendix 9: all versions prior to V9.24.10
Mendix Applications using Mendix 10: all versions prior to V10.4.0

3.2 Vulnerability Overview

3.2.1 AUTHENTICATION BYPASS BY CAPTURE-REPLAY CWE-294

A capture-replay flaw in the platform could have an impact to apps built with the platform, if certain preconditions are met that depend on the app’s model and access control design. This could allow authenticated attackers to access or modify objects without proper authorization, or escalate privileges in the context of the vulnerable app.

CVE-2023-45794 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported this vulnerability to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

Mendix Applications using Mendix 7: Update to V7.23.37 or later version and redeploy your application
Mendix Applications using Mendix 8: Update to V8.18.27 or later version and redeploy your application
Mendix Applications using Mendix 9: Update to V9.24.10 or later version and redeploy your application
Mendix Applications using Mendix 10: Update to V10.4.0 or later version and redeploy your application

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-084182 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability has a high attack complexity.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

 

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 9.8
ATTENTION: Exploitable remotely/Low attack complexity
Vendor: Siemens
Equipment: COMOS
Vulnerabilities: Improper Restriction of XML External Entity Reference, Path Traversal, Out-of-bounds Write, Out-of-bounds Read, Integer Overflow or Wraparound, Use After Free, Heap-based Buffer Overflow, Cleartext Transmission of Sensitive Information, Classic Buffer Overflow, Improper Access Control

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code, cause a denial-of-service condition, data infiltration, or perform access control violations.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products of Siemens are affected:

COMOS: All versions

3.2 Vulnerability Overview

3.2.1 IMPROPER RESTRICTION OF XML EXTERNAL ENTITY REFERENCE CWE-611

MPXJ through 8.1.3 allows XXE attacks. This affects the GanttProjectReader and PhoenixReader components.

CVE-2020-25020 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.2 IMPROPER LIMITATION OF A PATHNAME TO A RESTRICTED DIRECTORY (‘PATH TRAVERSAL’) CWE-22

common/InputStreamHelper.java in Packwood MPXJ before 8.3.5 allows directory traversal in the zip stream handler flow, leading to the writing of files to arbitrary locations.

CVE-2020-35460 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

3.2.3 OUT-OF-BOUNDS WRITE CWE-787

Open Design Alliance Drawings SDK before 2022.12.1 mishandles the loading of JPG files. Unchecked input data from a crafted JPG file leads to memory corruption. An attacker can leverage this vulnerability to execute code in the context of the current process.

CVE-2022-23095 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.4 OUT-OF-BOUNDS READ CWE-125

Open Design Alliance Drawings SDK (all versions prior to 2023.2) is vulnerable to an out-of-bounds read when rendering DWG files after they are opened in the recovery mode. This could allow an attacker to execute code in the context of the current process.

CVE-2022-28807 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.5 OUT-OF-BOUNDS READ CWE-125

Open Design Alliance Drawings SDK (all versions prior to 2023.3) is vulnerable to an out-of-bounds read when reading DWG files in a recovery mode. This could allow an attacker to execute code in the context of the current process.

CVE-2022-28808 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.6 OUT-OF-BOUNDS READ CWE-125

Open Design Alliance Drawings SDK (all versions prior to 2023.3) is vulnerable to an out-of-bounds read when reading a DWG file with invalid vertex number in a recovery mode. This could allow an attacker to execute code in the context of the current process.

CVE-2022-28809 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.7 INTEGER OVERFLOW OR WRAPAROUND CWE-190

Integer overflow in PDFium library used in COMOS allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file.

CVE-2023-0933 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.8 USE AFTER FREE CWE-416

Use after free in PDFium library used in COMOS allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVE-2023-1530 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.9 USE AFTER FREE CWE-416

Use after free in PDFium library used in COMOS allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file.

CVE-2023-2931 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.10 USE AFTER FREE CWE-416

Use after free in PDFium library used in COMOS allowed a remote attacker to potentially exploit heap corruption via a crafted PDF file.

CVE-2023-2932 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.11 HEAP-BASED BUFFER OVERFLOW CWE-122

Open Design Alliance Drawings SDK used in affected application is vulnerable to heap-based buffer overflow while parsing specially crafted DWG files. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-19104)

CVE-2023-22669 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.12 HEAP-BASED BUFFER OVERFLOW CWE-122

Open Design Alliance Drawings SDK used in affected application is vulnerable to heap-based buffer overflow while parsing specially crafted DXF files. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-19382)

CVE-2023-22670 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.13 CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319

Caching system in the affected application leaks sensitive information such as user and project information in cleartext via UDP.

CVE-2023-43503 has been assigned to this vulnerability. A CVSS v3 base score of 3.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

3.2.14 BUFFER COPY WITHOUT CHECKING SIZE OF INPUT (‘CLASSIC BUFFER OVERFLOW’) CWE-120

Ptmcast executable used for testing cache validation service in affected application is vulnerable to Structured Exception Handler (SEH) based buffer overflow. This could allow an attacker to execute arbitrary code on the target system or cause denial of service condition.

CVE-2023-43504 has been assigned to this vulnerability. A CVSS v3 base score of 9.6 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).

3.2.15 IMPROPER ACCESS CONTROL CWE-284

The affected application lacks proper access controls in SMB shares. This could allow an attacker to access files that the user should not have access to.

CVE-2023-43505 has been assigned to this vulnerability. A CVSS v3 base score of 9.6 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N).

3.2.16 IMPROPER ACCESS CONTROL CWE-284

The affected application lacks proper access controls in making the SQLServer connection. This could allow an attacker to query the database directly to access information that the user should not have access to.

CVE-2023-46601 has been assigned to this vulnerability. A CVSS v3 base score of 9.6 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens recommends updating to the latest version the COMOS product:

Update to V10.4.4 or later version.
For CVE-2023-43503, update the COMOS database to version 25. (See “Data maintenance: Modifying the version” in the user manual. Warning: After the update, the database cannot be used by older COMOS versions).
For CVE-2023-43504, delete ptmcast.exe from bin folder of COMOS installation directory. Installations from COMOS V10.4.4 or later version does not contain ptmcast.exe.

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

For CVE-2023-43505 and CVE-2023-46601, use an application server like Citrix which builds an additional layer of access control around COMOS. The file share with the documents folder and the database should be only accessible by the application server. You can find further recommendations in the COMOS manual “Security relevant configuration” in COMOS documentation.
Ensure all files imported into COMOS originate from a trusted source and transmitted are over secure channels.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-137900 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

 

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 9.8
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: SINEC PNI
Vulnerabilities: Improper Input Validation, Out-of-bounds Write

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to achieve remote code execution, a denial-of-service condition, or perform buffer overflows.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products of Siemens, are affected:

SINEC PNI: Versions prior to V2.0

3.2 Vulnerability Overview

3.2.1 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Information Disclosure Vulnerability.

CVE-2022-30184 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N).

3.2.2 OUT-OF-BOUNDS WRITE CWE-787

zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).

CVE-2022-37434 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.3 IMPROPER INPUT VALIDATION CWE-20

NuGet Client Elevation of Privilege Vulnerability.

CVE-2022-41032 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.4 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2023-21808 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.5 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

CVE-2023-24895 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.6 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

CVE-2023-24897 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.7 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-24936 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.8 IMPROPER INPUT VALIDATION CWE-20

.NET DLL Hijacking Remote Code Execution Vulnerability

CVE-2023-28260 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.9 IMPROPER INPUT VALIDATION CWE-20

.NET, .NET Framework, and Visual Studio Denial of Service Vulnerability

CVE-2023-29331 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.10 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-32032 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H).

3.2.11 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2023-33126 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

3.2.12 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Remote Code Execution Vulnerability

CVE-2023-33128 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

3.2.13 IMPROPER INPUT VALIDATION CWE-20

.NET and Visual Studio Elevation of Privilege Vulnerability

CVE-2023-33135 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

SINEC PNI: Update to V2.0 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-150063 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 9.1
ATTENTION: Exploitable remotely/Low attack complexity
Vendor: Siemens
Equipment: Desigo CC product family
Vulnerabilities: Buffer Over-Read, Heap-Based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow remote attackers to execute arbitrary code on the Desigo CC server or create a denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports that the following products are affected by vulnerabilities in the underlying third-party component WIBU Systems CodeMeter Runtime:

Desigo CC product family V5.0: All versions
Desigo CC product family V5.1: All versions
Desigo CC product family V6: All versions
Desigo CC product family V7: All versions

3.2 Vulnerability Overview

3.2.1 BUFFER OVER-READ CWE-126

A buffer over-read vulnerability in the CodeMeter Runtime network server could cause the server to return packets containing data from the heap. An unauthenticated remote attacker could exploit this issue to disclose heap memory contents or crash the CodeMeter Runtime Server (i.e., CodeMeter.exe).

CVE-2021-20093 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

3.2.2 BUFFER OVER-READ CWE-126

A buffer over-read vulnerability in the HTTP(S) service of the CodeMeter Runtime CmWAN server could cause the server to crash. An unauthenticated remote attacker with access to the CmWAN port could exploit this issue to crash the CodeMeter Runtime Server (i.e., CodeMeter.exe).

CVE-2021-20094 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.3 HEAP-BASED BUFFER OVERFLOW CWE-122

In CodeMeter Runtime versions up to 7.60b, there is a heap buffer overflow vulnerability which can potentially lead to a remote code execution. Currently, no PoC is known to us. To exploit the heap overflow, additional protection mechanisms need to be broken. Remote access is only possible if CodeMeter is configured as a server. If CodeMeter is not configured as a server, the adversary would need to log in to the machine where the CodeMeter Runtime is running or trick the user into sending a malicious request to CodeMeter. This might result in an escalation of privilege. (WIBU-230704-01)

CVE-2023-3935 has been assigned to this vulnerability. A CVSS v3 base score of 9.0 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Government Facilities
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens ProductCERT reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens has released a patch, to update the CodeMeter Runtime component and recommends to apply the patch on affected systems.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-625850 in HTML and CSAF.

For more details regarding the vulnerabilities in CodeMeter Runtime refer to:

WIBU Systems Security Advisory WIBU-210423-01
WIBU Systems Security Advisory WIBU-210423-02
WIBU Systems Security Advisory WIBU-230704-01

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 8.0
ATTENTION: Exploitable from adjacent network/low attack complexity
Vendor: Siemens
Equipment: SIMATIC PCS neo
Vulnerabilities: Missing Authentication for Critical Function, SQL Injection, Permissive Cross-domain Policy with Untrusted Domains, Cross-site Scripting

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an unauthenticated adjacent attacker to generate a privileged token and upload additional documents, execute SQL statements, trick a legitimate user to trigger unwanted behavior, and inject Javascript code into the application that is later executed by another legitimate user.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens products are affected:

SIMATIC PCS neo: Versions prior to V4.1

3.2 Vulnerability Overview

3.2.1 MISSING AUTHENTICATION FOR CRITICAL FUNCTION CWE-306

The PUD Manager of affected products does not properly authenticate users in the PUD Manager web service. This could allow an unauthenticated adjacent attacker to generate a privileged token and upload additional documents.

CVE-2023-46096 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

3.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN SQL COMMAND (‘SQL INJECTION’) CWE-89

The PUD Manager of affected products does not properly neutralize user provided inputs. This could allow an authenticated adjacent attacker to execute SQL statements in the underlying database.

CVE-2023-46097 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been assigned; the CVSS vector string is (AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L).

3.2.3 PERMISSIVE CROSS-DOMAIN POLICY WITH UNTRUSTED DOMAINS CWE-942

When accessing the Information Server from affected products, the products use an overly permissive CORS policy. This could allow an attacker to trick a legitimate user to trigger unwanted behavior.

CVE-2023-46098 has been assigned to this vulnerability. A CVSS v3 base score of 8.0 has been assigned; the CVSS vector string is (AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.4 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION (‘CROSS-SITE SCRIPTING’) CWE-79

There is a stored cross-site scripting vulnerability in the Administration Console of the affected product, that could allow an attacker with high privileges to inject Javascript code into the application that is later executed by another legitimate user.

CVE-2023-46099 has been assigned to this vulnerability. A CVSS v3 base score of 5.4 has been assigned; the CVSS vector string is (AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Michael Messner from Siemens Energy reported these vulnerabilities to Siemens.

4. MITIGATIONS

Siemens has released a new version for SIMATIC PCS neo and recommends to update to the latest version:

SIMATIC PCS neo: Update to V4.1 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-456933 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

 

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 7.5
Vendor: Siemens
Equipment: Mendix Studio Pro 7, 8, 9, 10.
Vulnerability: Out-of-bounds Write

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to execute code in the context of a victim user’s system.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products of Siemens, are affected:

Mendix Studio Pro 7: Versions prior to V7.23.37
Mendix Studio Pro 8: Versions prior to V8.18.27
Mendix Studio Pro 9: Versions prior to V9.24.0
Mendix Studio Pro 10: Versions prior to V10.3.1

3.2 Vulnerability Overview

3.2.1 OUT-OF-BOUNDS WRITE CWE-787

The affected products are vulnerable to an out-of-bounds write vulnerability in the integrated libwebp library, that could be triggered while parsing specially crafted image files. This could allow an attacker to execute code in the context of a victim user’s system. As a precondition, the user needs to add such image files, or Mendix Marketplace content that contains such image files, to their project. The exploitation happens in certain scenarios when the user opens the document that contains the image.

CVE-2023-4863 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported this vulnerability to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

Mendix Studio Pro 7: Update to V7.23.37 or later version
Mendix Studio Pro 8: Update to V8.18.27 or later version
Mendix Studio Pro 9: Update to V9.24.0 or later version
Mendix Studio Pro 10: Update to V10.3.1 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-268517 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

 

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 8.1
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: RUGGEDCOM APE1808
Vulnerabilities: SQL Injection, Improper Input Validation

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an authenticated attacker to execute arbitrary SQL queries on the DBMS used by the web application.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following components of Siemens are affected:

RUGGEDCOM APE1808 with Nozomi Guardian / CMC: All versions before V22.6.3 or 23.1.0

3.2 Vulnerability Overview

3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN SQL COMMAND (‘SQL INJECTION’) CWE-89

A SQL Injection vulnerability in Nozomi Networks Guardian and CMC due to improper input validation in certain parameters used in the Query functionality, allows an authenticated attacker to execute arbitrary SQL queries on the DBMS used by the web application. Authenticated users can extract arbitrary information from the DBMS in an uncontrolled way.

CVE-2023-2567 has been assigned to this vulnerability. A CVSS v3 base score of 7.6 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L).

3.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN SQL COMMAND (‘SQL INJECTION’) CWE-89

A SQL Injection vulnerability in Nozomi Networks Guardian and CMC due to improper input validation in certain fields used in the Asset Intelligence functionality of Siemens IDS, may allow an unauthenticated attacker to execute arbitrary SQL statements on the DBMS used by the web application by sending specially crafted malicious network packets. Malicious users with extensive knowledge on the underlying system may be able to extract arbitrary information from the DBMS in an uncontrolled way, or to alter its structure and data.

CVE-2023-29245 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.3 IMPROPER INPUT VALIDATION CWE-20

A denial of service (Dos) vulnerability in Nozomi Networks Guardian and CMC due to improper input validation in certain fields used in the Asset Intelligence functionality of Siemens IDS, allows an unauthenticated attacker to crash the IDS module by sending specially crafted malformed network packets. During the (limited) time window before the IDS module is automatically restarted, network traffic may not be analyzed.

CVE-2023-32649 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens is preparing updates and recommends specific countermeasures for products where updates are not, or not yet available. Users are advised to consult and implement the workarounds provided in Nozomi Network’s upstream security notifications. Contact user support to receive patch and update information.

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

Use internal firewall features to limit access to the web management interface.
It is recommended to monitor the IDS log to check for abnormal stops and restarts.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage.

For more information see the associated Siemens security advisory SSA-292063 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 9.1
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: SCALANCE XB-200/XC-200/XP-200/XF-200BA/XR-300WG Family
Vulnerabilities: Out-of-bounds Read, Inadequate Encryption Strength, Double Free, NULL Pointer Dereference, Allocation of Resources Without Limits or Throttling, Acceptance of Extraneous Untrusted Data With Trusted Data, Use of Hard-coded Cryptographic Key, Use of Weak Hash, Direct Request (‘Forced Browsing’), Uncontrolled Resource Consumption, Unchecked Return Value, Improper Neutralization of Special Elements in Output Used by a Downstream Component (‘Injection’), Unsynchronized Access to Shared Data in a Multithreaded Context

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service condition, change system configurations, inject arbitrary code, and change admin credentials.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products of Siemens, are affected:

SCALANCE XB205-3 (SC, PN) (6GK5205-3BB00-2AB2): Versions prior to V4.5
SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BB00-2TB2): Versions prior to V4.5
SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BD00-2TB2): Versions prior to V4.5
SCALANCE XB205-3 (ST, PN) (6GK5205-3BD00-2AB2): Versions prior to V4.5
SCALANCE XB205-3LD (SC, E/IP) (6GK5205-3BF00-2TB2): Versions prior to V4.5
SCALANCE XB205-3LD (SC, PN) (6GK5205-3BF00-2AB2): Versions prior to V4.5
SCALANCE XB208 (E/IP) (6GK5208-0BA00-2TB2): Versions prior to V4.5
SCALANCE XB208 (PN) (6GK5208-0BA00-2AB2): Versions prior to V4.5
SCALANCE XB213-3 (SC, E/IP) (6GK5213-3BD00-2TB2): Versions prior to V4.5
SCALANCE XB213-3 (SC, PN) (6GK5213-3BD00-2AB2): Versions prior to V4.5
SCALANCE XB213-3 (ST, E/IP) (6GK5213-3BB00-2TB2): Versions prior to V4.5
SCALANCE XB213-3 (ST, PN) (6GK5213-3BB00-2AB2): Versions prior to V4.5
SCALANCE XB213-3LD (SC, E/IP) (6GK5213-3BF00-2TB2): Versions prior to V4.5
SCALANCE XB213-3LD (SC, PN) (6GK5213-3BF00-2AB2): Versions prior to V4.5
SCALANCE XB216 (E/IP) (6GK5216-0BA00-2TB2): Versions prior to V4.5
SCALANCE XB216 (PN) (6GK5216-0BA00-2AB2): Versions prior to V4.5
SCALANCE XC206-2 (SC) (6GK5206-2BD00-2AC2): Versions prior to V4.5
SCALANCE XC206-2 (ST/BFOC) (6GK5206-2BB00-2AC2): Versions prior to V4.5
SCALANCE XC206-2G PoE (6GK5206-2RS00-2AC2): Versions prior to V4.5
SCALANCE XC206-2G PoE (54 V DC) (6GK5206-2RS00-5AC2): Versions prior to V4.5
SCALANCE XC206-2G PoE EEC (54 V DC) (6GK5206-2RS00-5FC2): Versions prior to V4.5
SCALANCE XC206-2SFP (6GK5206-2BS00-2AC2): Versions prior to V4.5
SCALANCE XC206-2SFP EEC (6GK5206-2BS00-2FC2): Versions prior to V4.5
SCALANCE XC206-2SFP G (6GK5206-2GS00-2AC2): Versions prior to V4.5
SCALANCE XC206-2SFP G (EIP DEF.) (6GK5206-2GS00-2TC2): Versions prior to V4.5
SCALANCE XC206-2SFP G EEC (6GK5206-2GS00-2FC2): Versions prior to V4.5
SCALANCE XC208 (6GK5208-0BA00-2AC2): Versions prior to V4.5
SCALANCE XC208EEC (6GK5208-0BA00-2FC2): Versions prior to V4.5
SCALANCE XC208G (6GK5208-0GA00-2AC2): Versions prior to V4.5
SCALANCE XC208G (EIP def.) (6GK5208-0GA00-2TC2): Versions prior to V4.5
SCALANCE XC208G EEC (6GK5208-0GA00-2FC2): Versions prior to V4.5
SCALANCE XC208G PoE (6GK5208-0RA00-2AC2): Versions prior to V4.5
SCALANCE XC208G PoE (54 V DC) (6GK5208-0RA00-5AC2): Versions prior to V4.5
SCALANCE XC216 (6GK5216-0BA00-2AC2): Versions prior to V4.5
SCALANCE XC216-3G PoE (6GK5216-3RS00-2AC2): Versions prior to V4.5
SCALANCE XC216-3G PoE (54 V DC) (6GK5216-3RS00-5AC2): Versions prior to V4.5
SCALANCE XC216-4C (6GK5216-4BS00-2AC2): Versions prior to V4.5
SCALANCE XC216-4C G (6GK5216-4GS00-2AC2): Versions prior to V4.5
SCALANCE XC216-4C G (EIP Def.) (6GK5216-4GS00-2TC2): Versions prior to V4.5
SCALANCE XC216-4C G EEC (6GK5216-4GS00-2FC2): Versions prior to V4.5
SCALANCE XC216EEC (6GK5216-0BA00-2FC2): Versions prior to V4.5
SCALANCE XC224 (6GK5224-0BA00-2AC2): Versions prior to V4.5
SCALANCE XC224-4C G (6GK5224-4GS00-2AC2): Versions prior to V4.5
SCALANCE XC224-4C G (EIP Def.) (6GK5224-4GS00-2TC2): Versions prior to V4.5
SCALANCE XC224-4C G EEC (6GK5224-4GS00-2FC2): Versions prior to V4.5
SCALANCE XF204 (6GK5204-0BA00-2GF2): Versions prior to V4.5
SCALANCE XF204 DNA (6GK5204-0BA00-2YF2): Versions prior to V4.5
SCALANCE XF204-2BA (6GK5204-2AA00-2GF2): Versions prior to V4.5
SCALANCE XF204-2BA DNA (6GK5204-2AA00-2YF2): Versions prior to V4.5
SCALANCE XP208 (6GK5208-0HA00-2AS6): Versions prior to V4.5
SCALANCE XP208 (Ethernet/IP) (6GK5208-0HA00-2TS6): Versions prior to V4.5
SCALANCE XP208EEC (6GK5208-0HA00-2ES6): Versions prior to V4.5
SCALANCE XP208PoE EEC (6GK5208-0UA00-5ES6): Versions prior to V4.5
SCALANCE XP216 (6GK5216-0HA00-2AS6): Versions prior to V4.5
SCALANCE XP216 (Ethernet/IP) (6GK5216-0HA00-2TS6): Versions prior to V4.5
SCALANCE XP216EEC (6GK5216-0HA00-2ES6): Versions prior to V4.5
SCALANCE XP216POE EEC (6GK5216-0UA00-5ES6): Versions prior to V4.5
SCALANCE XR324WG (24 x FE, AC 230V) (6GK5324-0BA00-3AR3): Versions prior to V4.5
SCALANCE XR324WG (24 X FE, DC 24V) (6GK5324-0BA00-2AR3): Versions prior to V4.5
SCALANCE XR326-2C PoE WG (6GK5326-2QS00-3AR3): Versions prior to V4.5
SCALANCE XR326-2C PoE WG (without UL) (6GK5326-2QS00-3RR3): Versions prior to V4.5
SCALANCE XR328-4C WG (24xFE, 4xGE, AC230V) (6GK5328-4FS00-3AR3): Versions prior to V4.5
SCALANCE XR328-4C WG (24xFE, 4xGE, AC230V) (6GK5328-4FS00-3RR3): Versions prior to V4.5
SCALANCE XR328-4C WG (24XFE, 4XGE, 24V) (6GK5328-4FS00-2AR3): Versions prior to V4.5
SCALANCE XR328-4C WG (24xFE, 4xGE,DC24V) (6GK5328-4FS00-2RR3): Versions prior to V4.5
SCALANCE XR328-4C WG (28xGE, AC 230V) (6GK5328-4SS00-3AR3): Versions prior to V4.5
SCALANCE XR328-4C WG (28xGE, DC 24V) (6GK5328-4SS00-2AR3): Versions prior to V4.5
SIPLUS NET SCALANCE XC206-2 (6AG1206-2BB00-7AC2): Versions prior to V4.5
SIPLUS NET SCALANCE XC206-2SFP (6AG1206-2BS00-7AC2): Versions prior to V4.5
SIPLUS NET SCALANCE XC208 (6AG1208-0BA00-7AC2): Versions prior to V4.5
SIPLUS NET SCALANCE XC216-4C (6AG1216-4BS00-7AC2): Versions prior to V4.5

3.2 Vulnerability Overview

3.2.1 OUT-OF-BOUNDS READ CWE-125

A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. The read buffer overrun might result in a crash which could lead to a denial-of-service attack. In theory it could also result in the disclosure of private memory contents (such as private keys, or sensitive plaintext) although we are not aware of any working exploit leading to memory contents disclosure as of the time of release of this advisory. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.

CVE-2022-4203 has been assigned to this vulnerability. A CVSS v3 base score of 4.9 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

3.2.2 INADEQUATE ENCRYPTION STRENGTH CWE-326

A timing-based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.

CVE-2022-4304 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).

3.2.3 DOUBLE FREE CWE-415

The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the “name” (e.g. “CERTIFICATE”), any header data and the payload data. If the function succeeds then the “name_out”, “header” and “data” arguments are populated with pointers to buffers containing the relevant decoded data. The caller is responsible for freeing those buffers. It is possible to construct a PEM file that results in 0 bytes of payload data. In this case PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a buffer that has already been freed. If the caller also frees this buffer, then a double free will occur. This will most likely lead to a crash. This could be exploited by an attacker who has the ability to supply malicious PEM files for parsing to achieve a denial-of-service attack. The functions PEM_read_bio() and PEM_read() are simple wrappers around PEM_read_bio_ex() and therefore these functions are also directly affected. These functions are also called indirectly by a number of other OpenSSL functions including PEM_X509_INFO_read_bio_ex() and SSL_CTX_use_serverinfo_file() which are also vulnerable. Some OpenSSL internal uses of these functions are not vulnerable because the caller does not free the header argument if PEM_read_bio_ex() returns a failure code. These locations include the PEM_read_bio_TYPE() functions as well as the decoders introduced in OpenSSL 3.0. The OpenSSL asn1parse command line application is also impacted by this issue.

CVE-2022-4450 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.4 NULL POINTER DEREFERENCE CWE-476

An invalid pointer dereference on read can be triggered when an application tries to load malformed PKCS7 data with the d2i_PKCS7(), d2i_PKCS7_bio() or d2i_PKCS7_fp() functions. The result of the dereference is an application crash which could lead to a denial-of-service attack. The TLS implementation in OpenSSL does not call this function however third-party applications might call these functions on untrusted data.

CVE-2023-0216 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.5 NULL POINTER DEREFERENCE CWE-476

An invalid pointer dereference on read can be triggered when an application tries to check a malformed DSA public key by the EVP_PKEY_public_check() function. This will most likely lead to an application crash. This function can be called on public keys supplied from untrusted sources which could allow an attacker to cause a denial-of-service attack. The TLS implementation in OpenSSL does not call this function but applications might call the function if there are additional security requirements imposed by standards such as FIPS 140-3.

CVE-2023-0217 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.6 NULL POINTER DEREFERENCE CWE-476

A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. In case the hash algorithm used for the signature is known to the OpenSSL library, but the implementation of the hash algorithm is not available the digest initialization will fail. There is a missing check for the return value from the initialization function which later leads to invalid usage of the digest API most likely leading to a crash. The unavailability of an algorithm can be caused by using FIPS enabled configuration of providers or more commonly by not loading the legacy provider. PKCS7 data is processed by the SMIME library calls and also by the time stamp (TS) library calls. The TLS implementation in OpenSSL does not call these functions however third-party applications would be affected if they call these functions to verify signatures on untrusted data.

CVE-2023-0401 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.7 ALLOCATION OF RESOURCES WITHOUT LIMITS OR THROTTLING CWE-770

Issue summary: Processing some specially crafted ASN.1 object identifiers or data containing them may be very slow. Impact summary: Applications that use OBJ_obj2txt() directly, or use any of the OpenSSL subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS with no message size limit may experience notable to very long delays when processing those messages, which may lead to a Denial of Service. An OBJECT IDENTIFIER is composed of a series of numbers – sub-identifiers – most of which have no size limit. OBJ_obj2txt() may be used to translate an ASN.1 OBJECT IDENTIFIER given in DER encoding form (using the OpenSSL type ASN1_OBJECT) to its canonical numeric text form, which are the sub-identifiers of the OBJECT IDENTIFIER in decimal form, separated by periods. When one of the sub-identifiers in the OBJECT IDENTIFIER is very large (these are sizes that are seen as absurdly large, taking up tens or hundreds of KiBs), the translation to a decimal number in text may take a very long time.
CVE-2023-2650 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H).

3.2.8 ACCEPTANCE OF EXTRANEOUS UNTRUSTED DATA WITH TRUSTED DATA CWE-349

Affected products do not properly validate the content of uploaded X509 certificates which could allow an attacker with administrative privileges to execute arbitrary code on the device.

CVE-2023-44317 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

3.2.9 USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321

Affected devices use a hardcoded key to obfuscate the configuration backup that an administrator can export from the device. This could allow an authenticated attacker with administrative privileges or an attacker that obtains a configuration backup to extract configuration information from the exported file.

CVE-2023-44318 has been assigned to this vulnerability. A CVSS v3 base score of 4.9 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N).

3.2.10 USE OF WEAK HASH CWE-328

Affected devices use a weak checksum algorithm to protect the configuration backup that an administrator can export from the device. This could allow an authenticated attacker with administrative privileges or an attacker that tricks a legitimate administrator to upload a modified configuration file to change the configuration of an affected device.

CVE-2023-44319 has been assigned to this vulnerability. A CVSS v3 base score of 4.9 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N).

3.2.11 DIRECT REQUEST (‘FORCED BROWSING’) CWE-425

Affected devices do not properly validate the authentication when performing certain modifications in the web interface allowing an authenticated attacker to influence the user interface configured by an administrator.

CVE-2023-44320 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

3.2.12 UNCONTROLLED RESOURCE CONSUMPTION CWE-400

Affected devices do not properly validate the length of inputs when performing certain configuration changes in the web interface allowing an authenticated attacker to cause a denial of service condition. The device needs to be restarted for the web interface to become available again.

CVE-2023-44321 has been assigned to this vulnerability. A CVSS v3 base score of 2.7 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L).

3.2.13 UNCHECKED RETURN VALUE CWE-252

Affected devices can be configured to send emails when certain events occur on the device. When presented with an invalid response from the SMTP server, the device triggers an error that disrupts email sending. An attacker with access to the network can use this to do disable notification of users when certain events occur.

CVE-2023-44322 has been assigned to this vulnerability. A CVSS v3 base score of 3.7 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

3.2.14 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS IN OUTPUT USED BY A DOWNSTREAM COMPONENT (‘INJECTION’) CWE-74

Affected devices do not properly sanitize an input field. This could allow an authenticated remote attacker with administrative privileges to inject code or spawn a system root shell. Follow-up of CVE-2022-36323.

CVE-2023-44373 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

3.2.15 UNSYNCHRONIZED ACCESS TO SHARED DATA IN A MULTITHREADED CONTEXT CWE-567

Affected devices allow to change the password, but insufficiently check which password is to be changed. With this an authenticated attacker could, under certain conditions, be able to change the password of another, potential admin user allowing her to escalate her privileges.

CVE-2023-44374 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens recommends updating the SCALANCE products to v4.5 or later version.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-699386 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

November 16, 2023: Initial Publication

View CSAF

1. EXECUTIVE SUMMARY

CVSS v3 7.8
ATTENTION: Low attack complexity
Vendor: Rockwell Automation
Equipment: SIS Workstation and ISaGRAF Workbench
Vulnerability: Improper Input Validation

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow unprivileged local users to overwrite files replacing them with malicious programs.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Rockwell Automation reports the following versions of SIS Workstation and ISaGRAF Workbench Code are affected:

Safety Instrumented System Workstation: v1.2 up to but not including v2.00
ISaGRAF Workbench: v6.6.9 up to but not including v6.06.10

3.2 Vulnerability Overview

3.2.1 Improper Input Validation CWE-20

Due to the third-party vulnerabilities in Nullsoft Scriptable Install System (NSIS), the SIS Workstation and ISaGRAF Workbench installer and uninstaller have unsafe implicit linking against Version.dll. Therefore, there is no protection mechanism in the wrapper function that resolves the dependency at an appropriate time during runtime. Also, the SIS workstation and ISaGRAF Workbench uninstaller uses temporary folder locations that allow unprivileged local users to overwrite files. This allows a local attack in which the uninstaller can be replaced by a malicious program.

CVE-2015-9268 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Rockwell Automation reported this vulnerability to CISA.

4. MITIGATIONS

Rockwell Automation recommends users of the affected software to update the affected product to the latest version:

Safety Instrumented System Workstation: v2.00 and later
ISaGRAF Workbench: v6.06.10 and later

Rockwell Automation encourages users of the affected software to apply the risk mitigations, if possible. Additionally, they encourage users to implement Rockwell Automation suggested security best practices to minimize the risk of vulnerability.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

5. UPDATE HISTORY

November 14, 2023: Initial Publication