1. EXECUTIVE SUMMARY

​CVSS v3 9.8
​ATTENTION: Exploitable remotely/low attack complexity
​Vendor: Weintek
​Equipment: Weincloud
​Vulnerabilities: Weak Password Recovery Mechanism for Forgotten Password, Improper Authentication, Improper Restriction of Excessive Authentication Attempts, Improper Handling of Structural Elements

2. RISK EVALUATION

​Successful exploitation of these vulnerabilities could allow an attacker to utilize the JSON web token (JWT) to reset account passwords, use expired credentials, perform brute force attacks on credentials, or cause a denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

​The following Weintek Weincloud versions are affected: 

​Account API: Versions 0.13.6 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 ​WEAK PASSWORD RECOVERY MECHANISM FOR FORGOTTEN PASSWORD CWE-640

​The affected product could allow an attacker to reset a password with the corresponding account’s JWT token only.

​CVE-2023-35134 has been assigned to this vulnerability. A CVSS v3 base score of 7.4 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

3.2.2 ​IMPROPER AUTHENTICATION CWE-287

​The affected product could allow an attacker to abuse the registration functionality to login with testing credentials to the official website.

​CVE-2023-37362 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).

3.2.3 ​IMPROPER RESTRICTION OF EXCESSIVE AUTHENTICATION ATTEMPTS CWE-307

​The affected product could allow an attacker to efficiently develop a brute force attack on credentials with authentication hints from error message responses.

​CVE-2023-32657 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

3.2.4 ​IMPROPER HANDLING OF STRUCTURAL ELEMENTS CWE-237

​The affected product could allow an attacker to cause a denial-of-service condition for Weincloud by sending a forged JWT token.

​CVE-2023-34429 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.3 BACKGROUND

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

3.4 RESEARCHER

​Hank Chen (PSIRT and Threat Research of TXOne Networks) reported these vulnerabilities to CISA.

4. MITIGATIONS

​Weintek has updated their account API to v0.13.8, which has fixed the issue. This fix does not require any action for users.

​Additional mitigations are recommended to help reduce risk:

​Log in on trusted computers if possible. Log out after usage on un-trusted ones.
​On the HMIs, if the online services are not used, set to offline mode for EasyAccess 2.0 or Dashboard services using system reserved addresses.
​Regularly change passwords to reduce risks. 
​Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible- only applicable devices and/or systems have access to the internet.

​CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:

​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 these vulnerabilities.

1. EXECUTIVE SUMMARY

​CVSS v3 7.8
​ATTENTION: Low attack complexity
​Vendor: Keysight Technologies
​Equipment: N6854A Geolocation Server
​Vulnerabilities: Exposed Dangerous Method or Function, Relative Path Traversal

2. RISK EVALUATION

​Successful exploitation of these vulnerabilities could allow an attacker to escalate privileges, execute arbitrary code, or cause a denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

​The following Keysight monitoring products are affected: 

​N6854A Geolocation Server versions 2.4.2 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 ​EXPOSED DANGEROUS METHOD OR FUNCTION CWE-749

​In Keysight Geolocation Server v2.4.2 and prior, a low privileged attacker could create a local ZIP file containing a malicious script in any location. The attacker could abuse this to load a DLL with SYSTEM privileges.

​CVE-2023-36853 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.2 ​RELATIVE PATH TRAVERSAL CWE-23

​In Keysight Geolocation Server v2.4.2 and prior, an attacker could upload a specially crafted malicious file, resulting in escalation of privileges.

​CVE-2023-34394 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

3.2.3 ​RELATIVE PATH TRAVERSAL CWE-23

​In Keysight Geolocation Server v2.4.2 and prior, an attacker could delete any file or directory with SYSTEM privileges due to an improper path validation, which could result in local privilege escalation or a denial-of-service condition.

​CVE-2023-34394 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been calculated; 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: Communications, Government
​COUNTRIES/AREAS DEPLOYED: Worldwide
​COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

​Steven Seeley (mr_me) of Source Incite reported these vulnerabilities to CISA.

4. MITIGATIONS

​Keysight recommends upgrading the N6854A Geolocation server to version 2.4.3.

​CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 these vulnerabilities. These vulnerabilities are not exploitable remotely.

1. EXECUTIVE SUMMARY

CVSS v3 10.0
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Iagona
Equipment: ScrutisWeb
Vulnerabilities: Absolute Path Traversal, Authorization Bypass Through User-Controlled Key, Use of Hard-coded Cryptographic Key, Unrestricted Upload of File with Dangerous Type

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to upload and execute arbitrary files.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Iagona ScrutisWeb, a web application, are affected:

ScrutisWeb: Version 2.1.37 and prior

3.2 VULNERABILITY OVERVIEW

3.2.1 ABSOLUTE PATH TRAVERSAL CWE-36

Iagona ScrutisWeb versions 2.1.37 and prior are vulnerable to a directory traversal vulnerability that could allow an unauthenticated user to directly access any file outside the webroot.

CVE-2023-33871 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:H/I:N/A:N).

3.2.2 AUTHORIZATION BYPASS THROUGH USER-CONTROLLED KEY CWE-639

Iagona ScrutisWeb versions 2.1.37 and prior are vulnerable to an insecure direct object reference vulnerability that could allow an unauthenticated user to view profile information, including user login names and encrypted passwords.

CVE-2023-38257 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:H/I:N/A:N).

3.2.3 USE OF HARD-CODED CRYPTOGRAPHIC KEY CWE-321

Iagona ScrutisWeb versions 2.1.37 and prior are vulnerable to a cryptographic vulnerability that could allow an unauthenticated user to decrypt encrypted passwords into plaintext.

CVE-2023-35763 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

3.2.4 UNRESTRICTED UPLOAD OF FILE WITH DANGEROUS TYPE CWE-434

Iagona ScrutisWeb versions 2.1.37 and prior are vulnerable to a remote code execution vulnerability that could allow an unauthenticated user to upload a malicious payload and execute it.

CVE-2023-35189 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been assigned; 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: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: France

3.4 RESEARCHER

Neil Graves, Jorian van den Hout, and Malcolm Stagg reported these vulnerabilities to CISA.

4. MITIGATIONS

Iagona has developed and released Iagona ScrutisWeb v2.1.38.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 these vulnerabilities.

1. EXECUTIVE SUMMARY

CVSS v3 6.6
ATTENTION: Low attack complexity
Vendor: GE Digital
Equipment: CIMPLICITY
Vulnerability: Heap-based Buffer Overflow

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to cause memory corruption issues resulting in unwanted behavior such as code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following GE Digital products are affected: 

CIMPLICITY: All versions

3.2 VULNERABILITY OVERVIEW

3.2.1 HEAP-BASED BUFFER OVERFLOW CWE-122

All versions of GE Digital CIMPLICITY that are not adhering to SDG guidance and accepting documents from untrusted sources are vulnerable to memory corruption issues due to insufficient input validation, including issues such as out-of-bounds reads and writes, use-after-free, stack-based buffer overflows, uninitialized pointers, and a heap-based buffer overflow. Successful exploitation could allow an attacker to execute arbitrary code.

CVE-2023-3463 has been assigned to this vulnerability. A CVSS v3 base score of 6.6 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H).

3.3 BACKGROUND

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

3.4 RESEARCHER

Michael Heinzl reported this vulnerability to CISA.

4. MITIGATIONS

To obtain the latest versions of GE CIMPLICITY, contact your local GE Digital representative at https://digitalsupport.ge.com/s/contactsupport.

Exploit is only possible if an authenticated user with local access to the system obtains and opens a document from a malicious source so secure deployment and strong access management by users is essential. GE Digital and customers have a shared responsibility for security and users are required to adhere to the most recent Secure Deployment Guide (SDG) instructions.

Please refer to GE Digital’s security bulletin for more information.

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.

1. EXECUTIVE SUMMARY

CVSS v3 7.5 
ATTENTION: Exploitable remotely/low attack complexity  
Vendor: Rockwell Automation 
Equipment: Kinetix 5700 
Vulnerability: Uncontrolled Resource Consumption 

2. RISK EVALUATION

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

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following version of Rockwell Automation Kinetix 5700 DC Bus Power Supply is affected:

 Kinetix 5700: V13.001

3.2 VULNERABILITY OVERVIEW

3.2.1 UNCONTROLLED RESOURCE CONSUMPTION CWE-400

The Kinetix 5700 DC Bus Power Supply Series A is vulnerable to CIP fuzzing. The new ENIP connections cannot be established if impacted by this vulnerability, which prohibits operational capabilities of the device resulting in a denial-of-service attack.

CVE-2023-2263 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 has released the following mitigations and workarounds. Customers using the affected software are encouraged to apply the risk mitigations below, if possible.  

Upgrade to V13.003 or later which has been patched to mitigate these issues.
For information on how to mitigate security risks on industrial automation control systems (IACS) networks see the following publications:
System Security Design Guidelines Reference Manual publication, SECURE-RM001
Configure System Security Features User Manual, SECURE-UM001

Rockwell Automation encourages users to implement their suggested security best practices to minimize risk of the vulnerability.

For more information, see Rockwell Automation’s Security Advisory.

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 8.1
ATTENTION: Exploitable remotely/low attack complexity/public exploits are available
Vendor: WellinTech
Equipment: KingHistorian
Vulnerabilities: Exposure of Sensitive Information to an Unauthorized Actor, Signed to Unsigned Conversion Error

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to disclose sensitive information or send malicious data which can lead to a buffer overflow.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of WellinTech KingHistorian, a time-series database, are affected:

KingHistorian: version 35.01.00.05

3.2 VULNERABILITY OVERVIEW

3.2.1 EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200

An information disclosure vulnerability exists in the User authentication functionality of WellinTech KingHistorian 35.01.00.05. A specially crafted network packet can lead to a disclosure of sensitive information. An attacker can sniff network traffic to leverage this vulnerability.

CVE-2022-45124 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:H/I:N/A:N).

3.2.2 SIGNED TO UNSIGNED CONVERSION ERROR CWE-195

An integer conversion vulnerability exists in the SORBAx64.dll RecvPacket functionality of WellinTech KingHistorian 35.01.00.05. A specially crafted network packet can lead to a buffer overflow. An attacker can send a malicious packet to trigger this vulnerability.

CVE-2022-43663 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.3 BACKGROUND

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

3.4 RESEARCHER

Carl Hurd of Cisco Talos reported this vulnerability to Talos Intelligence.

4. MITIGATIONS

WellinTech has released KingHistorian V3.52 to remediate these vulnerabilities.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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.

1. EXECUTIVE SUMMARY

​CVSS v3 9.8 
​ATTENTION: Exploitable remotely/low attack complexity/public exploits are available
​Vendor: GeoVision
​Equipment: GV-ADR2701
​Vulnerabilities: Improper Authentication

2. RISK EVALUATION

​Successful exploitation of this vulnerability could allow an attacker to log in to the camera’s web application.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

​GeoVision reports this vulnerability affects the following GV-ADR2701 cameras: 

​GV-ADR2701: Version V1.00_2017_12_15

3.2 VULNERABILITY OVERVIEW

3.2.1 ​IMPROPER AUTHENTICATION CWE-287

​In GeoVision GV-ADR2701 cameras, an attacker could edit the login response to access the web application.

​CVE-2023-3638 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; 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: Commercial Facilities
​COUNTRIES/AREAS DEPLOYED: Worldwide
​COMPANY HEADQUARTERS LOCATION: Taiwan

3.4 RESEARCHER

​CISA discovered public proof of concept as authored by Chan Nyein Wai.

4. MITIGATIONS

GeoVision recommends that users of these devices upgrade to newer models with the latest firmware update which they have verified are not vulnerable to this issue such as TDR2704, TDR2702, or TDR2700. Alternatively, users could restrict connection of these cameras to closed local area networks isolated from internet connection.

​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. This vulnerability is exploitable remotely. This vulnerability has low attack complexity.

1. EXECUTIVE SUMMARY

CVSS v3 9.9
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Siemens
Equipment: SIMATIC CN 4100
Vulnerabilities: Improper Access Control, Incorrect Default Permissions

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to gain privilege escalation and bypass network isolation.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Siemens SIMATIC CN 4100, a communication node, are affected:

SIMATIC CN 4100: all versions prior to V2.5

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER ACCESS CONTROL CWE-284

Affected device consists of improper access controls in the configuration files that could lead to privilege escalation. An attacker could gain admin access with this vulnerability, leading to complete device control.

CVE-2023-29130 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).

3.2.2 INCORRECT DEFAULT PERMISSIONS CWE-276

Affected device consists of an incorrect default value in the SSH configuration. This could allow an attacker to bypass network isolation.

CVE-2023-29131 has been assigned to this vulnerability. A CVSS v3 base score of 7.4 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/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 Klassen and Martin Floeck of BASF Security Team reported these vulnerabilities to Siemens.

4. MITIGATIONS

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

SIMATIC CN 4100: Update to V2.5 or later version.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. In order 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.

For more information, see the associated Siemens Security Advisory SSA-313488 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 these vulnerabilities.

1. EXECUTIVE SUMMARY

CVSS v3 9.8
ATTENTION: Exploitable remotely/low attack complexity
Vendor: Honeywell
Equipment: Experion PKS, LX, and PlantCruise
Vulnerabilities: Heap-based Buffer Overflow, Stack-based Buffer Overflow, Out-of-bounds Write, Uncontrolled Resource Consumption, Improper Encoding or Escaping of Output, Deserialization of Untrusted Data, Improper Input Validation, Incorrect Comparison

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could cause a denial-of-service condition, allow privilege escalation or allow remote code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Honeywell reports these vulnerabilities affect the following versions of Experion PKS, LX, and PlantCruise:  

Experion PKS: versions prior to R520.2
Experion LX: versions prior to R520.2
Experion PlantCruise: versions prior to R520.2

3.2 VULNERABILITY OVERVIEW

3.2.1 HEAP-BASED BUFFER OVERFLOW CWE-122

Experion Server or Console Station could experience a denial-of-service condition due to a heap overflow during the handling of a specially crafted message for a specific configuration operation.

CVE-2023-23585 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.2 STACK-BASED BUFFER OVERFLOW  CWE-121

Experion Server or Console Station could experience a denial-of-service condition or remote code execution  due to a stack overflow during the handling of a specially crafted message for a specific configuration operation.

CVE-2023-25078 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.3 UNEXPECTED STATUS CODE OR RETURN VALUE CWE-394

C300 could leak configuration data when an error is generated in response to a specially crafted message.

CVE-2023-25948 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.4 UNCONTROLLED RESOURCE CONSUMPTION CWE-400

C300 could experience a denial-of-service condition due to a buffer overflow in the handling of a specially crafted message received by the controller.

CVE-2023-26597 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.5 IMPROPER ENCODING OR ESCAPING OF OUTPUT CWE-116

C300 could experience a denial-of-service condition due to a stack overflow when decoding a message from the server.

CVE-2023-24480 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.6 DESERIALIZATION OF UNTRUSTED DATA CWE-502

C300 could experience a denial-of-service condition due to a buffer overflow when an error is generated in response to a specially crafted message.

CVE-2023-25770 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.7 INSUFFICIENT VERIFICATION OF DATA AUTHENTICITY CWE-345

C300 may be loaded with malicious firmware which could enable remote code execution.

CVE-2023-25178 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.2.8 INCORRECT COMPARISON CWE-697

Experion Server may experience a denial-of-service condition due to an incorrect comparison when handling a specially crafted message.

CVE-2023-22435 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.9 HEAP-BASED BUFFER OVERFLOW CWE-122 

Experion Server may experience a denial-of-service condition due to a heap overflow which could occur when handling a specially crafted message.

CVE-2023-24474 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; 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: Multiple
COUNTRIES/AREAS DEPLOYED: Worldwide
COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

ARMIS cyber researchers reported these vulnerabilities to Honeywell.

4. MITIGATIONS

Honeywell recommends users upgrade Experion Platforms to version R520.2. Download information includes the following:

Product: Experion PKS, LX, & PlantCruise
Version: R520.2
For instructions on this process:
Go to the Honeywell Website and sign in.
Select “Support” at the top of the web page.
Select “Product Documents & Downloads.”
In the given search box, search for: “Experion PKS R520.2”, “Experion LX R520.2” or “Experion PlantCruise R520.2” and select the hyperlink for the given Experion platform.

Honeywell advises users to follow security best practices for Experion platform environments to ensure access is limited to authorized users only. Users should ensure the backup files are maintained in a network location or physical drive with access limited to authorized users only and should not share them.

Honeywell Security Notifications are available on the Honeywell website.  For access, users should visit the Honeywell website and sign in, select the search icon at the top of the web page, and search for “SN2023-06-22”.

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

Ensure the least-privilege user principle is followed.
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 these vulnerabilities. These vulnerabilities are exploitable remotely. These vulnerabilities have a low attack complexity.

1. EXECUTIVE SUMMARY

​CVSS v3 9.8
​ATTENTION: Exploitable remotely / low attack complexity
​Vendor: Siemens
​Equipment: RUGGEDCOM ROX
​Vulnerabilities: Cleartext Transmission of Sensitive Information, Command Injection, Improper Authentication, Classic Buffer Overflow, Uncontrolled Resource Consumption, Improper Certificate Validation, Cross-Site Request Forgery (CSRF), Improper Input Validation, Incorrect Default Permissions, Cross-site Scripting, Inadequate Encryption Strength, Use of a Broken or Risky Cryptographic Algorithm.

2. RISK EVALUATION

​Successful exploitation of these vulnerabilities could allow an attacker to send a malformed HTTP packet causing certain functions to fail, achieve a man-in-the-middle attack, or arbitrary code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

​The following products from Siemens are affected:

​RUGGEDCOM ROX MX5000: All versions prior to V2.16.0
​RUGGEDCOM ROX MX5000RE: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1400: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1500: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1501: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1510: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1511: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1512: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1524: All versions prior to V2.16.0
​RUGGEDCOM ROX RX1536: All versions prior to V2.16.0
​RUGGEDCOM ROX RX5000: All versions prior to V2.16.0

3.2 VULNERABILITY OVERVIEW

3.2.1 ​CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319

​A user can tell curl from version 7.20.0 to version 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server (`–ssl-reqd` on the command line or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL` or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly crafted but perfectly legitimate response. This flaw would then make curl silently continue its operations without TLS contrary to the instructions and expectations, exposing possibly sensitive data in clear text over the network.

​CVE-2021-22946 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

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

​The c_rehash script does not properly sanitize shell metacharacters to prevent command injection.

​CVE-2022-1292 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

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

​In addition to the c_rehash shell command injection identified in CVE-2022-1292, further circumstances where the c_rehash script does not properly sanitize shell metacharacters to prevent command injection were found by code review. When the CVE-2022-1292 was fixed it was not discovered that there are other places in the script where the file names of certificates being hashed were possibly passed to a command executed through the shell. This script is distributed by some operating systems in a manner where it is automatically executed. On such operating systems, an attacker could execute arbitrary commands with the privileges of the script. Use of the c_rehash script is considered obsolete and should be replaced by the OpenSSL rehash command line tool.

​CVE-2022-2068 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.4 ​IMPROPER AUTHENTICATION CWE-287

​An improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow reuse OAUTH2-authenticated connections without properly making sure that the connection was authenticated with the same credentials as set for this transfer. This affects SASL-enabled protocols: SMPTP(S), IMAP(S), POP3(S) and LDAP(S) (openldap only).

​CVE-2022-22576 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

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

​Rsyslog is a system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction. This vulnerability cannot be used for remote code execution, but there may still be a slight chance for experts to do that. The bug occurs when the octet count is read. While there is a check for the maximum number of octets, digits are written to a heap buffer even when the octet count is over the maximum. This can be used to overrun the memory buffer. However, once the sequence of digits stops, no additional characters can be added to the buffer. In our opinion, this makes remote exploits impossible or at least highly complex. Octet-counted framing is one of two potential framing modes enabled by default on receivers. Modules `imtcp`, `imptcp`, `imgssapi`, and `imhttp` are used for regular syslog message reception. It is best practice not to directly expose them to the public. When this practice is followed, the risk is considerably lower. Module `imdiag` is a diagnostics module primarily intended for testbench runs. Octet-counted framing is not very common. Usually, it needs to be specifically enabled at senders. If users do not need it, they can turn it off for the most important modules. This will mitigate the vulnerability.

​CVE-2022-24903 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.6 ​UNCONTROLLED RESOURCE CONSUMPTION CWE-400

​libcurl provides the `CURLOPT_CERTINFO` option to allow applications to request details to be returned about a server’s certificate chain. Due to an erroneous function, a malicious server could make libcurl built with NSS get stuck in a never-ending busy-loop when trying to retrieve that information.

​CVE-2022-27781 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.7 IMPROPER CERTIFICATE VALIDATION CWE-295

​libcurl would reuse a previously created connection even when a TLS or SSH related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, several TLS and SSH settings were left out from the configuration match checks, making them match too easily.

​CVE-2022-27782 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

3.2.8 CROSS-SITE REQUEST FORGERY (CSRF) CWE-352

​The web interface of the affected devices is vulnerable to cross-site request forgery attacks. By tricking an authenticated victim user to click a malicious link, an attacker could perform arbitrary actions on the device on behalf of the victim user.

​CVE-2022-29561 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.9 ​IMPROPER INPUT VALIDATION CWE-20

​Affected devices do not properly handle malformed HTTP packets. This could allow an unauthenticated remote attacker to send a malformed HTTP packet causing certain functions to fail in a controlled manner.

​CVE-2022-29562 has been assigned to this vulnerability. A CVSS v3 base score of 3.7 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

3.2.10 ​INCORRECT DEFAULT PERMISSIONS CWE-276

​When curl prior to 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by finalizing the operation with a rename from a temporary name to the final target file name. In that rename operation, it might accidentally widen the permissions for the target file, leaving the updated file accessible to more users than intended.

​CVE-2022-32207 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

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

​A reflected cross-site scripting (XSS) vulnerability exists in the web interface of the affected application that could allow an attacker to execute malicious javascript code by tricking users into accessing a malicious link. The value is reflected in the response without sanitization while throwing an “invalid params element name” error on the get_elements parameters.

​CVE-2023-36386 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

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

​A reflected cross-site scripting (XSS) vulnerability exists in the web interface of the affected application that could allow an attacker to execute malicious javascript code by tricking users into accessing a malicious link. The malformed value is reflected directly in the response without sanitization while throwing an “invalid path” error.

​CVE-2023-36389 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

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

​A reflected cross-site scripting (XSS) vulnerability exists in the web interface of the affected application that could allow an attacker to execute malicious javascript code by tricking users into accessing a malicious link. The value is reflected in the response without sanitization while throwing an “invalid params element name” error on the action parameters.

​CVE-2023-36390 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

3.2.14 ​INADEQUATE ENCRYPTION STRENGTH CWE-326

​The affected devices are configured to offer weak ciphers by default. This could allow an unauthorized attacker in a man-in-the-middle position to read and modify any data passed over to and from the affected device.

​CVE-2023-36748 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L).

3.2.15 ​USE OF A BROKEN OR RISKY CRYPTOGRAPHIC ALGORITHM CWE-327

​The webserver of the affected devices supports insecure TLS 1.0 protocol. An attacker could achieve a man-in-the-middle attack and compromise confidentiality and integrity of data.

​CVE-2023-36749 has been assigned to this vulnerability. A CVSS v3 base score of 7.4 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

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

​The software upgrade URL parameter in 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-2023-36750 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

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

​The install-app URL parameter in 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-2023-36751 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

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

​The upgrade-app URL parameter in 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-2023-36752 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

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

​The uninstall-app App-name parameter in 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-2023-36753 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).

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

​The SCEP server configuration URL parameter in 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-2023-36754 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).

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

​The SCEP CA Certificate Name parameter in 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-2023-36755 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).

3.3 BACKGROUND

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

3.4 RESEARCHER

​Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

​Siemens recommends users update the product to the following versions:

​Update to V2.16.0 or later version

​As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens’ operational guidelines for Industrial Security, and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

​For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories

​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-146325 in HTML and CSAF.

​CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 these vulnerabilities.