1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION:  Exploitable remotely/low skill level to exploit Vendor:  Rockwell Automation Equipment:  FactoryTalk Diagnostics Vulnerabilities:  Deserialization of Untrusted Data 2. UPDATE OR REPOSTED INFORMATION This updated advisory is a follow-up to the original advisory titled ICSA-20-051-02-Rockwell Automation FactoryTalk Diagnostics (Update A) that was published February 20, 2020, on the ICS webpage at cisa.gov/ICS. 3. RISK EVALUATION Successful exploitation of this vulnerability could allow a remote unauthenticated attacker to execute arbitrary code with SYSTEM level privileges. 4. TECHNICAL DETAILS 4.1 AFFECTED PRODUCTS The following versions of FactoryTalk Diagnostic software, a subsystem of the FactoryTalk Service Platform, are affected: FactoryTalk Diagnostics software: Versions 2.00 to 6.11 4.2 VULNERABILITY OVERVIEW 4.2.1 DESERIALIZATION OF UNTRUSTED DATA CWE-502 Factory Talk Diagnostics exposes a .NET Remoting endpoint via RNADiagnosticsSrv.exe at TCPtcp/8082, which can insecurely deserialize untrusted data. CVE-2020-6967 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 ). 4.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS:  Food and Agriculture, Transportation Systems, Water and Wastewater Systems COUNTRIES/AREAS DEPLOYED:  Worldwide COMPANY HEADQUARTERS LOCATION:  United States 4.4 RESEARCHER Trend Micro’s Zero Day Initiative, working with rgod of 9sg, reported this vulnerability to CISA. 5. MITIGATIONS Rockwell Automation will fully resolve this vulnerability in the next release of the FactoryTalk Service Platform. Rockwell Automation recommends affected users implement the following compensating controls, based on their needs: Upgrade to version 6.20 or later for versions that predate version 6.20; this version restricts connection settings to only the local port. ——— Begin Update B Part 1 of 1 ——— For FactoryTalk Services Platform version 6.31: Enable Microsoft Windows Commination Foundation (WCF) which avoids the vulnerability. For FactoryTalk Services Platform version 6.31: Enable .NET Remoting (system default) with connections restricted to a local port; mitigating the vulnerability. ——— End Update B Part 1 of 1 ——— Install the patch BF24822 to restrict connections settings to only the local port for versions 2.74, 2.80, 2.81, 2.90, 3.00, 6.10, or 6.11. Upgrade to a more recent version for versions that predate version 2.74. Disable the Remote Diagnostics Service if this service is not in use. Disabling this service does not result in data loss. Use Windows Firewall Configuration to help prevent remote connection to the affected port if the Remote Diagnostics Service is in use. For more information, please see Rockwell Automation’s security advisory (login required). 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 that they are not accessible from the Internet . Locate control system networks and remote devices behind firewalls, and isolate them from the business network. Use secure methods, such as Virtual Private Networks (VPNs), when remote access is required. Recognize that VPNs may have vulnerabilities and should be updated to the most current version available; 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 us-cert.gov . Several recommended 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 on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability.CISAraw:3198ead0319f8e771cd211943211215c – 2023-05-18T15:43:41.000Z

May 18, 2023Elle CeeDee

Cybersecurity
1. EXECUTIVE SUMMARY

CVSS v3 9.8

ATTENTION:  Exploitable remotely/low skill level to exploit

Vendor:  Rockwell Automation

Equipment:  FactoryTalk Diagnostics

Vulnerabilities:  Deserialization of Untrusted Data

2. UPDATE OR REPOSTED INFORMATION

This updated advisory is a follow-up to the original advisory titled ICSA-20-051-02-Rockwell Automation FactoryTalk Diagnostics (Update A) that was published February 20, 2020, on the ICS webpage at cisa.gov/ICS.

3. RISK EVALUATION

Successful exploitation of this vulnerability could allow a remote unauthenticated attacker to execute arbitrary code with SYSTEM level privileges.

4. TECHNICAL DETAILS

4.1 AFFECTED PRODUCTS

The following versions of FactoryTalk Diagnostic software, a subsystem of the FactoryTalk Service Platform, are affected:

FactoryTalk Diagnostics software: Versions 2.00 to 6.11

4.2 VULNERABILITY OVERVIEW

4.2.1 DESERIALIZATION OF UNTRUSTED DATA CWE-502

Factory Talk Diagnostics exposes a .NET Remoting endpoint via RNADiagnosticsSrv.exe at TCPtcp/8082, which can insecurely deserialize untrusted data.

CVE-2020-6967 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 ).

4.3 BACKGROUND

CRITICAL INFRASTRUCTURE SECTORS:  Food and Agriculture, Transportation Systems, Water and Wastewater Systems

COUNTRIES/AREAS DEPLOYED:  Worldwide

COMPANY HEADQUARTERS LOCATION:  United States

4.4 RESEARCHER

Trend Micro’s Zero Day Initiative, working with rgod of 9sg, reported this vulnerability to CISA.

5. MITIGATIONS

Rockwell Automation will fully resolve this vulnerability in the next release of the FactoryTalk Service Platform.

Rockwell Automation recommends affected users implement the following compensating controls, based on their needs:

Upgrade to version 6.20 or later for versions that predate version 6.20; this version restricts connection settings to only the local port.

——— Begin Update B Part 1 of 1 ———

For FactoryTalk Services Platform version 6.31: Enable Microsoft Windows Commination Foundation (WCF) which avoids the vulnerability.

For FactoryTalk Services Platform version 6.31: Enable .NET Remoting (system default) with connections restricted to a local port; mitigating the vulnerability.

——— End Update B Part 1 of 1 ———

Install the patch BF24822 to restrict connections settings to only the local port for versions 2.74, 2.80, 2.81, 2.90, 3.00, 6.10, or 6.11.

Upgrade to a more recent version for versions that predate version 2.74.

Disable the Remote Diagnostics Service if this service is not in use. Disabling this service does not result in data loss.

Use Windows Firewall Configuration to help prevent remote connection to the affected port if the Remote Diagnostics Service is in use.

For more information, please see Rockwell Automation’s security advisory (login required).

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 that they are not accessible from the Internet .

Locate control system networks and remote devices behind firewalls, and isolate them from the business network.

Use secure methods, such as Virtual Private Networks (VPNs), when remote access is required. Recognize that VPNs may have vulnerabilities and should be updated to the most current version available; 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 us-cert.gov . Several recommended 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 on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies .

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

No known public exploits specifically target this vulnerability.CISAraw:3198ead0319f8e771cd211943211215cCISAThu, 18 May 23 12:00:00 +0000

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CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog , based on evidence of active exploitation. CVE-2023-2 868  Barracuda Networks ESG Appliance Improper Input Validation 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 . This product is provided subject to this Notification  and this Privacy & Use  policy.CISAraw:c10caedb098110c81742083ca1bb7557 – 2023-05-30T12:15:47.000Z
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CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog , based on evidence of active exploitation. CVE-2023-2 868  Barracuda Networks ESG Appliance Improper Input Validation 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 . This product is provided subject to this Notification  and this Privacy & Use  policy.CISAraw:750720923d0bad309449ad3f150687d9 – 2023-05-26T17:30:31.000Z
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CISA released one Industrial Control Systems (ICS) advisory on May 25, 2023. This advisory provides timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-145-01 Moxa MXsecurity Series CISA encourages users and administrators to review the newly released ICS advisory for technical details and mitigations.CISAraw:749c5fdcaa51e1bbc4192b9637bc2f11 – 2023-05-25T15:25:10.000Z
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