3 New Vulnerabilities Affect OT Products from German Festo and CODESYS Companies

Researchers have disclosed information of three new security vulnerabilities influencing operational technology (OT) goods from CODESYS and Festo that could guide to supply code tampering and denial-of-services (DoS).

The vulnerabilities, noted by Forescout Vedere Labs, are the latest in a lengthy list of flaws collectively tracked under the name OT:ICEFALL.

“These issues exemplify both an insecure-by-structure approach — which was regular at the time the products and solutions ended up released – wherever brands consist of risky features that can be accessed with no authentication or a subpar implementation of security controls, these as cryptography,” the scientists reported.

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The most critical of the flaws is CVE-2022-3270 (CVSS rating: 9.8), a critical vulnerability that influences Festo automation controllers using the Festo Generic Multicast (FGMC) protocol to reboot the gadgets devoid of necessitating any authentication and bring about a denial of company (DoS) problem.

An additional DoS shortcoming in Festo controllers (CVE-2022-3079, CVSS rating: 7.5) relates to a case of unauthenticated, distant access to an undocumented web webpage (“cec-reboot.php”) that could be exploited by an attacker with network entry to Festo CPX-CEC-C1 and CPX-CMXX PLCs.

The third issue, on the other hand, considerations the use of weak cryptography in the CODESYS V3 runtime environment to safe download code and boot purposes (CVE-2022-4048, CVSS rating: 7.7), which could be abused by a undesirable actor to decrypt and manipulate the source code, thus undermining confidentiality and integrity protections.

Forescout stated it also recognized two known CODESYS bugs impacting Festo CPX-CEC-C1 controllers (CVE-2022-31806 and CVE-2022-22515) that stem from an unsafe configuration in the Management runtime natural environment, and could lead to a denial-of-service sans authentication.

“This is however a different illustration of a supply chain issue where a vulnerability has not been disclosed for all the solutions it affects,” the researchers reported.

To mitigate likely threats, businesses are proposed to find out and stock susceptible gadgets, implement appropriate network segmentation controls, and keep an eye on network website traffic for anomalous action.

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