RISK EVALUATION. Successful exploitation of these vulnerabilities could allow remote code execution.
Industrial Control Systems Network Protocol Parsers - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write in their primary analyses function for Ethercat communication packets.
CVE-2023-7244 has been assigned to this vulnerability.
A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is.
Industrial Control Systems Network Protocol Parsers - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write while analyzing specific Ethercat datagrams.
CVE-2023-7243 has been assigned to this vulnerability.
Industrial Control Systems Network Protocol Parsers - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds read during the process of analyzing a specific Ethercat packet.
CVE-2023-7242 has been assigned to this vulnerability.
A CVSS v3.1 base score of 8.2 has been calculated; the CVSS vector string is.
To help reduce successful exploitation, users are encouraged to keep critical software updates and patches up to date in their system networks.
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, recognizing VPNs may have vulnerabilities and should be updated to the most current version available.
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.
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.
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.
This Cyber News was published on www.cisa.gov. Publication date: Tue, 20 Feb 2024 17:13:07 +0000