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Rockwell Automation ThinManager ThinServer

1. EXECUTIVE SUMMARY

  • CVSS v3 9.8
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Rockwell Automation
  • Equipment: ThinManager ThinServer
  • Vulnerabilities: Improper Input Validation

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to remotely delete arbitrary files with system privileges.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Rockwell Automation reports this vulnerability affects the following versions of ThinManager ThinServer, a thin client and remote desktop protocol (RDP) server management software:

  • ThinManager ThinServer: Versions 11.0.0-11.0.6
  • ThinManager ThinServer: Versions 11.1.0-11.1.6
  • ThinManager ThinServer: Versions 11.2.0-11.2.6
  • ThinManager ThinServer: Versions 12.1.0-12.1.6
  • ThinManager ThinServer: Versions 12.0.0-12.0.5
  • ThinManager ThinServer: Versions 13.0.0-13.0.2
  • ThinManager ThinServer: Version 13.1.0

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER INPUT VALIDATION CWE-20

Due to improper input validation, an integer overflow condition exists in the affected products. When the ThinManager processes incoming messages, a read access violation occurs and terminates the process. A malicious user could exploit this vulnerability by sending a crafted synchronization protocol message.

CVE-2023-2914 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.2 IMPROPER INPUT VALIDATION CWE-20

Due to improper input validation, a path traversal vulnerability exists when the ThinManager processes a certain function. If exploited, an unauthenticated remote threat actor can delete arbitrary files with system privileges. A malicious user could exploit this vulnerability by sending a specifically crafted synchronization protocol message.

CVE-2023-2915 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.3 IMPROPER INPUT VALIDATION CWE-20

Due to improper input validation, a path traversal vulnerability exists, via the file name field, when the ThinManager processes a certain function. If exploited, an unauthenticated remote attacker can upload arbitrary files to any directory on the disk drive where ThinServer.exe is installed. A malicious user could exploit this vulnerability by sending a crafted synchronization protocol message.

CVE-2023-2917 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
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: United States

3.4 RESEARCHER

Rockwell Automation reported these vulnerabilities to CISA.

4. MITIGATIONS

Rockwell Automation recommends customers apply the following mitigations:

  • ThinManager ThinServer: Versions 11.0.0-11.2.6: Update to 11.0.7
  • ThinManager ThinServer: Versions 11.1.0-11.1.6: Update to 11.1.7
  • ThinManager ThinServer: Versions 11.2.0-11.2.6: Update to 11.2.8
  • ThinManager ThinServer: Versions 12.1.0-12.1.6: Update to 12.1.7
  • ThinManager ThinServer: Versions 12.0.0-12.0.5: Update to 12.0.6
  • ThinManager ThinServer: Versions 13.0.0-13.0.2: Update to 13.0.3
  • ThinManager ThinServer: Version 13.1.0: Update to 13.1.1

 

Customers using the affected software are encouraged to apply mitigations, if possible. Additionally, Rockwell Automation encourages customers to implement suggested security best practices to minimize the risk of vulnerability.

  • Update to the corrected software versions.
  • Limit remote access for TCP Port 2031 to known thin clients and ThinManager servers.
  • Security Best Practices

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

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 exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

CISA Adds Two Known Exploited Vulnerabilities to Catalog

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation.

  • CVE-2023-38035 Ivanti Sentry Authentication Bypass Vulnerability 
  • CVE-2023-27532 Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function Vulnerability

These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Note: To view other newly added vulnerabilities in the catalog, click on the arrow in the “Date Added to Catalog” column—which will sort by descending dates.

Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information.

Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

​Trane Thermostats

1. EXECUTIVE SUMMARY

  • ​CVSS v3 6.8
  • ​ATTENTION: Low attack complexity
  • ​Vendor: Trane
  • ​Equipment: XL824, XL850, XL1050, and Pivot thermostats
  • ​Vulnerability: Injection

2. RISK EVALUATION

​Successful exploitation of this vulnerability could allow an attacker to execute arbitrary commands as root using a specially crafted filename.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

​Trane reports this vulnerability affects the following thermostats:

  • ​Trane Technologies XL824 Thermostat: Firmware versions 5.9.8 and earlier
  • ​Trane Technologies XL850 Thermostat: Firmware versions 5.9.8 and earlier 
  • ​Trane Technologies XL1050 Thermostat: Firmware versions 5.9.8 and earlier
  • ​Trane Technologies Pivot Thermostat: Firmware versions 1.8 and earlier

3.2 VULNERABILITY OVERVIEW

3.2.1 ​INJECTION CWE-74

​A command injection vulnerability exists in Trane XL824, XL850, XL1050, and Pivot thermostats allowing an attacker to execute arbitrary commands as root using a specially crafted filename. The vulnerability requires physical access to the device via a USB stick.

​CVE-2023-4212 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: Critical Manufacturing
  • ​COUNTRIES/AREAS DEPLOYED: Worldwide
  • ​COMPANY HEADQUARTERS LOCATION: Ireland

3.4 RESEARCHER

​Houlton McGuinn reported this vulnerability to Trane.

4. MITIGATIONS

​Trane Technologies has pushed the patch out to all devices. The patch is available to all affected devices. As soon as the device is connected to the internet, it will check for a new firmware version. If a new version is available, the device will download and install it. Other than connecting the device to the internet, no user interaction is required.

​If a user wants to verify that they received a patch for this vulnerability, they can verify the firmware version is greater than what is listed above by navigating to the “About” screen on the thermostat. Menu > System Info > About.

​For more information, users may contact their local Trane sales office.

​Trane has published a service database article on their website (login required).

​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 exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.