1. EXECUTIVE SUMMARY

CVSS v3 4.9
ATTENTION: Exploitable remotely/low attack complexity
Vendor: SpiderControl
Equipment: SCADAWebServer
Vulnerability: Path Traversal

2. RISK EVALUATION

Successful exploitation of this vulnerability could result in a denial-of-service condition

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of SCADAWebServer are affected:

SCADAWebServer: Versions 2.08 and prior

3.2 VULNERABILITY OVERVIEW

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

SpiderControl SCADA Webserver versions 2.08 and prior are vulnerable to path traversal. An attacker with administrative privileges could overwrite files on the webserver using the HMI’s upload file feature. This could create size zero files anywhere on the webserver, potentially overwriting system files and creating a denial-of-service condition.

CVE-2023-3329 has been assigned to this vulnerability. A CVSS v3 base score of 4.9 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Commercial Facilities
COUNTRIES/AREAS DEPLOYED: Worldwide (Primarily Europe)
COMPANY HEADQUARTERS LOCATION: Switzerland

3.4 RESEARCHER

Yang Liu from ELEX FEIGONG RESEARCH INSTITUTE of Elex CyberSecurity, Inc. reported this vulnerability to CISA.

4. MITIGATIONS

SpiderControl recommends users update their systems to the latest version.

SpiderControl recommends users apply the following mitigations:

If doing development work on the device, after the development phase is finished, switch off the file upload feature. To do this, go to the file C:wwwZelsWebServ.xml and set the property “file_upload_en” to 0 like so: 0 . This will mitigate the vulnerability in all older versions, and should also be done for the current version in order to prevent unwanted access to the Web-servers html file directory.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use 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 its 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 at 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.

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 exploits specifically target this vulnerability.

1. EXECUTIVE SUMMARY

CVSS v3 6.3
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Enphase
Equipment: Envoy
Vulnerability: OS Command Injection

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to gain root access to the affected product.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following version of Enphase Envoy, an energy monitoring device, is affected:

Envoy: D7.0.88

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND (‘OS COMMAND INJECTION’) CWE-78

Enphase Envoy versions D7.0.88 and prior are vulnerable to a command injection exploit that may allow an attacker to execute root commands.

CVE-2023-33869 has been assigned to this vulnerability. A CVSS v3 base score of 6.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).

3.3 BACKGROUND

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

3.4 RESEARCHER

OBSWCY3F reported this vulnerability to CISA.

4. MITIGATIONS

Enphase Energy has not responded to requests to work with CISA to mitigate this vulnerability. Users of the affected products are encouraged to contact Enphase Energy support for additional information.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use 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 its 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 at 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.

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 exploits specifically target this vulnerability.

1. EXECUTIVE SUMMARY

CVSS v3 8.6 
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Enphase
Equipment: Enphase Installer Toolkit
Vulnerability: Use of Hard-coded Credentials

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow sensitive information to be obtained by an attacker using hard-coded credentials.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following version of Enphase Installer Toolkit, a software application, is affected: 

Installer Toolkit: 3.27.0

3.2 VULNERABILITY OVERVIEW

3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798

Enphase Installer Toolkit versions 3.27.0 and prior have hard coded credentials embedded in binary code in the Android application. An attacker can exploit this and gain access to sensitive information.

CVE-2023-32274 has been assigned to this vulnerability. A CVSS v3 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N).

3.3 BACKGROUND

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

3.4 RESEARCHER

OBSWCY3F reported this vulnerability to CISA.

4. MITIGATIONS

Enphase Energy has not responded to requests to work with CISA to mitigate this vulnerability. Users of the affected product are encouraged to contact Enphase Energy support for additional information.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use 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 its 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 at 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.

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 exploits specifically target this vulnerability.

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).

1. EXECUTIVE SUMMARY

CVSS v3 9.9
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: SIMATIC PCS 7, SIMATIC S7-PM, SIMATIC STEP 7 V5
Vulnerability: Improper Control of Generation of Code (‘Code Injection’)

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow remote users with low privileges to use embedded functions of the database (local or in a network share) that have impact on the server.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products from Siemens are affected: 

SIMATIC PCS 7: All versions
SIMATIC S7-PM: All versions
SIMATIC STEP 7 V5: All versions prior to V5.7

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER CONTROL OF GENERATION OF CODE (‘CODE INJECTION’) CWE-94

The affected product contains a database management system that could allow remote users with low privileges to use embedded functions of the database (local or in a network share) that have impact on the server. An attacker with network access to the server network could leverage these embedded functions to run code with elevated privileges in the database management system’s server.

CVE-2023-25910 has been assigned to this vulnerability. A CVSS v3 base score of 9.9 has been assigned. The CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

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:

If only one Engineering System is in use, consider changing to “Single terminal system” mode in the “Configure SIMATIC Workspace/Workstation” application, under the “Workstation Configuration” tab. Restart the computer. More details can be found in the following FAQ: https://support.industry.siemens.com/cs/ww/en/view/109821340/
SIMATIC STEP 7 V5: Update to V5.7 or later version
SIMATIC PCS 7: Currently no fix is available
SIMATIC S7-PM: Currently no fix is planned
SIMATIC S7-PM: Switch to “Single terminal system” (as described in the section Workarounds and Mitigations). Alternatively, consider migrating the STEP 7 project to the latest version of TIA Portal and uninstall S7-PM

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-968170 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use 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 its 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 at 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.

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 exploits specifically target this vulnerability.

​​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).

1. EXECUTIVE SUMMARY

​CVSS v3 7.2
​ATTENTION: Low attack complexity
​Vendor: Siemens
​Equipment: SICAM A8000 Devices
​Vulnerabilities: Command Injection, Use of Hard-coded Credentials, Exposed Dangerous Method or Function

2. RISK EVALUATION

​Successful exploitation of these vulnerabilities could allow an attacker, with direct physical access, to crack the root password to login to the device or remotely execute arbitrary code with root privileges. 

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

​The following products from Siemens are affected:

​CP-8031 MASTER MODULE (6MF2803-1AA00): All versions prior to CPCI85 V05
​CP-8050 MASTER MODULE (6MF2805-0AA00): All versions prior to CPCI85 V05

3.2 VULNERABILITY OVERVIEW

3.2.1 ​IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN A COMMAND (‘COMMAND INJECTION’) CWE-77

​The web interface of affected devices is vulnerable to command injection due to missing server-side input sanitation. This could allow an authenticated privileged remote attacker to execute arbitrary code with root privileges.

​CVE-2023-33919 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been calculated. The CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

3.2.2 ​USE OF HARD-CODED CREDENTIALS CWE-798

​The affected devices contain the hash of the root password in a hard-coded form, which could be exploited for UART console login to the device. An attacker with direct physical access could exploit this vulnerability.

​CVE-2023-33920 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been calculated. The CVSS vector string is (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.3 ​EXPOSED DANGEROUS METHOD OR FUNCTION CWE-749

​The affected devices contain an exposed UART console login interface. An attacker with direct physical access could try to brute force or crack the root password to login to the device.

​CVE-2023-33921 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been calculated. The CVSS vector string is (AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

​CRITICAL INFRASTRUCTURE SECTORS: Multiple Sectors

​COUNTRIES/AREAS DEPLOYED: Worldwide

​COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

​SEC Consult Vulnerability Lab, on behalf of Netz Niederösterreich GmbH, EVN Gruppe reported these vulnerabilities to Siemens.

4. MITIGATIONS

​Siemens recommends updating the following products to the latest version:

​CP-8050 MASTER MODULE (6MF2805-0AA00): Update to CPCI85 V05 or later version
​CP-8031 MASTER MODULE (6MF2803-1AA00): Update to CPCI85 V05 or later version

​Operators of critical power systems (e.g., TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid’s reliability can thus be minimized by virtue of the grid design. Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. As a general security measure Siemens strongly recommends protecting network access with appropriate mechanisms (e.g., firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines to run the devices in a protected IT environment.

​Recommended security guidelines can be found at: https://www.siemens.com/gridsecurity.

​For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT.

​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-731916 in HTML and CSAF.

​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 at 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.

​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 exploits specifically target these vulnerabilities.

1. EXECUTIVE SUMMARY

CVSS v3 9.8 
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Advantech
Equipment: WebAccess/SCADA
Vulnerability: Untrusted Pointer Dereference

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker gaining remote file system access and achieving remote command execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Advantech WebAccess/SCADA, a browser-based SCADA software package, are affected:

WebAccess/SCADA: All versions prior to 9.1.4

3.2 VULNERABILITY OVERVIEW

3.2.1 UNTRUSTED POINTER DEREFERENCE CWE-822

All versions prior to 9.1.4 of Advantech WebAccess/SCADA are vulnerable to use of untrusted pointers. The RPC arguments the client sent client could contain raw memory pointers for the server to use as-is. This could allow an attacker to gain access to the remote file system and the ability to execute commands and overwrite files.

CVE-2023-1437 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Chemical, Energy, Water and Wastewater
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: Taiwan

3.4 RESEARCHER

Florent Saudel reported this vulnerability to CISA.

4. MITIGATIONS

Advantech recommends all affected users update their products to the latest patch. This vulnerability was fixed in Version 9.1.4.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use 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 its 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 at 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.

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 exploits specifically target this vulnerability.

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).

1. EXECUTIVE SUMMARY

CVSS v3 3.9
ATTENTION: Exploitable from an adjacent network
Vendor: Siemens
Equipment: SIMATIC Products
Vulnerability: Use of Obsolete Function

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to obtain unauthorized access to product control and data.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products from Siemens are affected:

SIMATIC NET PC Software V14: All versions
SIMATIC NET PC Software V15: All versions
SIMATIC PCS 7 V8.2: All versions
SIMATIC PCS 7 V9.0: All versions
SIMATIC PCS 7 V9.1: All versions
SIMATIC WinCC: All versions prior to V8.0
SINAUT Software ST7sc: All versions

3.2 VULNERABILITY OVERVIEW

3.2.1 USE OF OBSOLETE FUNCTION CWE-477

Before SIMATIC WinCC V8, legacy OPC services (OPC DA (Data Access), OPC HDA (Historical Data Access), and OPC AE (Alarms & Events)) were used per default. These services were designed on top of the Windows ActiveX and DCOM mechanisms, and do not implement state-of-the-art security mechanisms for authentication and encryption of contents.

CVE-2023-28829 has been assigned to this vulnerability. A CVSS v3 base score of 3.9 has been calculated. The CVSS vector string is (CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L).

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:

SIMATIC WinCC: Update to V8.0 or later
SINATIC NET PC Software: Ensure that only trusted users are part of the SIMATIC Net group
Ensure that only trusted users are part of the SIMATIC HMI group
Disable the legacy OPC DA/HDA/AE services and switch to OPC UA, if possible

For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT.

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-508677 in HTML and CSAF.

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 at 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.

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.

No known public exploits specifically target this vulnerability. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity.

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). 

1. EXECUTIVE SUMMARY

CVSS v3 4.6
ATTENTION: Low attack complexity
Vendor: Siemens
Equipment: SIMOTION
Vulnerability: Exposure of Sensitive Information Due to Incompatible Policies

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated attacker to extract confidential technology object (TO) configuration from the device.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products from Siemens are affected:

SIMOTION C240 (6AU1240-1AA00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION C240 PN (6AU1240-1AB00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D410-2 DP (6AU1410-2AA00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D410-2 DP/PN (6AU1410-2AD00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D425-2 DP (6AU1425-2AA00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D425-2 DP/PN (6AU1425-2AD00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D435-2 DP (6AU1435-2AA00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D435-2 DP/PN (6AU1435-2AD00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D445-2 DP/PN (6AU1445-2AD00-0AA0): All versions including V5.4 and later
SIMOTION D445-2 DP/PN (6AU1445-2AD00-0AA1): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION D455-2 DP/PN (6AU1455-2AD00-0AA0): All versions including V5.4 and later but prior to V5.5 SP1
SIMOTION P320-4 E (6AU1320-4DE65-3AF0): All versions including V5.4 and later
SIMOTION P320-4 S (6AU1320-4DS66-3AG0): All versions including V5.4 and later

3.2 VULNERABILITY OVERVIEW

3.2.1 EXPOSURE OF SENSITIVE INFORMATION DUE TO INCOMPATIBLE POLICIES CWE-213

When operated with Security Level Low the device does not protect access to certain services relevant for debugging. This could allow an unauthenticated attacker to extract confidential TO configuration from the device.

CVE-2023-27465 has been assigned to this vulnerability. A CVSS v3 base score of 4.6 has been calculated. The CVSS vector string is (CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/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:

Update to V5.5 SP1 or later if possible.
Restrict physical access to the device and avoid using Security Level Low (e.g., Service Selector Switch) in position 8, with simotion.ini or the PSTATE program – see Section 3.5 of SIMOTION IT – SIMOTION IT Diagnostics and Configuration Manual) in production environments.

For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT.

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-482956 in HTML and CSAF.

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 at 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.

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 exploits specifically target this vulnerability. This vulnerability is not exploitable remotely.

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).

1. EXECUTIVE SUMMARY

CVSS v3 7.8
ATTENTION: Low attack complexity
Vendor: Siemens
Equipment: SIMATIC WinCC V7
Vulnerability: Incorrect Permission Assignment for Critical Resource

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow a local attacker to inject arbitrary code and escalate privileges if a non-default installation path was chosen during installation.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following products from Siemens are affected: 

SIMATIC WinCC: All versions prior to V7.5.2.13

3.2 VULNERABILITY OVERVIEW

3.2.1 INCORRECT PERMISSION ASSIGNMENT FOR CRITICAL RESOURCE CWE-732

Affected applications fail to set proper access rights for their installation folder if a non-default installation path was chosen during installation.  This could allow an authenticated local attacker to inject arbitrary code and escalate privileges.

CVE-2023-30897 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned. The CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

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:

SIMATIC WinCC: Update to V7.5.2.13 or later version.
Always use the default installation path when installing SIMATIC WinCC V7.
After installation to a non-default folder, ensure that the access permissions of that folder are equal to the permissions of the Program Files folder.
Harden the application server to prevent local access by untrusted personnel.

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-914026 in HTML and CSAF. 

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:

Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use 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 its 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 at 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.

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 exploits specifically target this vulnerability. This vulnerability is not exploitable remotely.