DHS

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CISA Releases Analysis of FY23 Risk and Vulnerability Assessments

CISA has released an analysis and infographic detailing the findings from the 143 Risk and Vulnerability Assessments (RVAs) conducted across multiple critical infrastructure sectors in fiscal year 2023 (FY23).

The analysis details a sample attack path including tactics and steps a cyber threat actor could follow to compromise an organization with weaknesses representative of those CISA observed in FY23 RVAs. The infographic highlights the most successful techniques for each tactic that RVAs documented. Both the analysis and infographic map threat actor behavior to the MITRE ATT&CK® framework.

CISA encourages network defenders to review the analysis and infographic and apply the recommended mitigations to protect against the observed tactics and techniques.

Ivanti Releases Security Update for Cloud Services Appliance

Ivanti has released a security update addressing an OS command injection vulnerability (CVE-2024-8190) affecting Ivanti Cloud Services Appliance (CSA) 4.6 (all versions before patch 519). A cyber threat actor could exploit this vulnerability to take control of an affected system.  

At this time, Ivanti has confirmed limited exploitation and urges its customers using the affected versions to upgrade to CSA version 5.0. Ivanti no longer supports CSA 4.6 (end-of-life). 

CISA recommends users and administrators review CISA and FBI’s joint guidance on eliminating OS command injections and the Ivanti security advisory and apply the recommended updates. 

Note: CISA has added CVE-2024-8190 to its Known Exploited Vulnerabilities Catalog, which, per Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities, requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the specified due date to protect FCEB networks against active threats. 

Siemens SIMATIC SCADA and PCS 7 Systems

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 v4 9.4
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Siemens
  • Equipment: SIMATIC SCADA and PCS 7 Systems
  • Vulnerability: Execution with Unnecessary Privileges

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to execute arbitrary code with high privileges.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens products are affected:

  • SIMATIC BATCH V9.1: All versions
  • SIMATIC Information Server 2020: All versions
  • SIMATIC Information Server 2022: All versions
  • SIMATIC PCS 7 V9.1: All versions
  • SIMATIC Process Historian 2020: All versions
  • SIMATIC Process Historian 2022: All versions
  • SIMATIC WinCC Runtime Professional V18: All versions
  • SIMATIC WinCC Runtime Professional V19: All versions
  • SIMATIC WinCC V7.4: All versions
  • SIMATIC WinCC V7.5: All versions prior to V7.5 SP2 Update 18
  • SIMATIC WinCC V8.0: All versions prior to V8.0 Update 5

3.2 Vulnerability Overview

3.2.1 EXECUTION WITH UNNECESSARY PRIVILEGES CWE-250

The affected products run their DB server with elevated privileges which could allow an authenticated attacker to execute arbitrary OS commands with administrative privileges.

CVE-2024-35783 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:H/UI:N/S:C/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-35783. A base score of 9.4 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Chemical, Energy, Food and Agriculture, and Water and Wastewater Systems
  • 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:

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-629254 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.

5. UPDATE HISTORY

  • September 12, 2024: Initial Publication

Siemens Industrial Edge Management

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 v4 10.0
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Siemens
  • Equipment: Industrial Edge Management
  • Vulnerability: Authorization Bypass Through User-Controlled Key

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to impersonate other devices onboarded to the system.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Siemens products are affected:

  • Industrial Edge Management Pro: Versions prior to V1.9.5
  • Industrial Edge Management Virtual: Versions prior to V2.3.1-1

3.2 Vulnerability Overview

3.2.1 AUTHORIZATION BYPASS THROUGH USER-CONTROLLED KEY CWE-639

Affected components do not properly validate the device tokens. This could allow an unauthenticated remote attacker to impersonate other devices onboarded to the system.

CVE-2024-45032 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-45032. A base score of 10.0 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Energy
  • 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:

  • Industrial Edge Management Pro: Update to V1.9.5 or later version
  • Industrial Edge Management Virtual: Update to V2.3.1-1 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-359713 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.

5. UPDATE HISTORY

  • September 12, 2024: Initial Publication

Siemens SINEMA Remote Connect Server

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 v4 5.3
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Siemens
  • Equipment: SINEMA Remote Connect Server
  • Vulnerability: Session Fixation

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow a remote attacker to circumvent the additional multi-factor authentication for user session establishment.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports that the following versions of SINEMA Remote Connect Server, a remote network management platform, are affected:

  • SINEMA Remote Connect Server: versions prior to V3.2 SP2

3.2 Vulnerability Overview

3.2.1 SESSION FIXATION CWE-384

The affected application does not properly handle user session establishment and invalidation. This could allow a remote attacker to circumvent the additional multi-factor authentication for user session establishment.

CVE-2024-42345 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been assigned; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

A CVSS v4 score has also been calculated for CVE-2024-42345. A base score of 8.5 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Commercial Facilities, Energy, Food and Agriculture, Healthcare and Public Health, Transportation Systems, Water and Wastewater Systems
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported this vulnerability to CISA.

4. MITIGATIONS

Siemens has released a new version for SINEMA Remote Connect Client and recommends to update to V3.2 SP2 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-869574 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.

5. UPDATE HISTORY

  • September 12, 2024: Initial Publication

CISA Releases Twenty-Five Industrial Control Systems Advisories

CISA released twenty-five Industrial Control Systems (ICS) advisories on September 12, 2024. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS.

CISA encourages users and administrators to review newly released ICS advisories for technical details and mitigations.

Rockwell Automation FactoryTalk View Site

View CSAF

1. EXECUTIVE SUMMARY

  • CVSS v4 9.2
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Rockwell Automation
  • Equipment: FactoryTalk
  • Vulnerability: Command Injection

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to perform unauthenticated remote code execution.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Rockwell Automation FactoryTalk View Site, are affected:

  • FactoryTalk View Site Edition: Versions V12.0, V13.0, V14.0

3.2 Vulnerability Overview

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

A remote code vulnerability exists in the affected products. The vulnerability occurs when chained with path traversal, command injection, and XSS vulnerabilities and allows for full unauthenticated remote code execution. The link in the mitigations section below contains patches to fix this issue.

CVE-2024-45824 has been assigned to this vulnerability. A CVSS v3.1 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).

A CVSS v4 score has also been calculated for CVE-2024-45824. A base score of 9.2 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

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 offers users the following solutions:

Users with the affected software are encouraged to apply the risk mitigations, if possible.

  • Navigate to the following link and apply patches, directions are on the link page
  • For information on how to mitigate Security Risks on industrial automation control systems, we encourage users to implement our suggested security best practices to minimize the risk of the vulnerability.

For more information about this issue, please see the advisory on the Rockwell Automation security page.

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), 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.

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

5. UPDATE HISTORY

  • September 12, 2024: Initial Publication