Rockwell Automation Patches Vulnerabilities in ICS Controllers and Software

Summary

Rockwell Automation has issued patches for several critical and high-severity vulnerabilities affecting its industrial control system (ICS) products, including Logix, CompactLogix, Flex, RSLinx, and FactoryTalk. The vulnerabilities could allow for authentication bypass, denial-of-service attacks, and unauthorized administrative actions. While CISA distributed advisories for most, they did not cover FactoryTalk Historian vulnerabilities. Notably, none of the newly patched flaws are reported to be under active exploitation, though a separate older vulnerability (CVE-2021-22681) has been exploited in the wild.

Full text

Rockwell Automation informed customers on Tuesday that patches are available for several vulnerabilities affecting its Logix and CompactLogix controllers, Flex I/O dual-port Ethernet/IP adapters, RSLinx industrial communication software, and FactoryTalk automation suite. In FactoryTalk Historian Site Edition the industrial giant patched three high- and critical-severity vulnerabilities that can be exploited to bypass authentication and launch DoS attacks. The company told customers that its FactoryTalk Analytics PavilionX product is affected by a high-severity improper API authorization issue that “can allow an unauthorized actor to execute privileged operations, including user/role management and other administrative actions”. In some of its CompactLogix, ControlLogix, Compact GuardLogix, and GuardLogix controllers, the vendor fixed a high-severity DoS vulnerability that can cause a major, non-recoverable fault requiring a special recovery program. Some CompactLogix controllers are also affected by two other DoS issues. Flex I/O dual-port Ethernet/IP adapters are affected by a DoS flaw and a critical vulnerability that can be exploited by an unauthenticated attacker to change a device’s web interface password, which could lead to unauthorized access and account takeover. In the RSLinx product, Rockwell patched an old DoS vulnerability introduced by the use of a third-party component. Rockwell’s ICS advisories were also distributed by CISA on Tuesday, but the cybersecurity agency did not publish an advisory for the FactoryTalk Historian vulnerabilities.Advertisement. Scroll to continue reading. The company recently confirmed the in-the-wild exploitation of an old vulnerability tracked as CVE-2021-22681. However, the latest advisories indicate that none of the newly addressed security holes have been targeted by threat actors. Related: Real-World ICS Security Tales From the Trenches Related: Siemens Says Desigo CC Files Flagged as Malware by Security Engines Related: Critical HVAC and UPS Vulnerabilities Could Let Hackers Disrupt Data Centers Written By Eduard Kovacs Eduard Kovacs (@EduardKovacs) is senior managing editor at SecurityWeek. He worked as a high school IT teacher before starting a career in journalism in 2011. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering. Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing for the latest cybersecurity threats, trends, and expert insights. 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Indicators of Compromise

• cve — CVE-2021-22681

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