RISK EVALUATION. Successful exploitation of these vulnerabilities could allow an attacker to cause a denial-of-service condition on the affected product or compromise the web application through a cross-site request forgery vulnerability.
Through the exploitation of active user sessions, an attacker could send custom requests to cause a denial-of-service condition on the device.
CVE-2023-50707 has been assigned to this vulnerability.
A CVSS v3 base score of 9.6 has been calculated; the CVSS vector string is.
A successful CSRF attack could force the user to perform state changing requests on the application.
If the victim is an administrative account, a CSRF attack could compromise the entire web application.
CVE-2023-6689 has been assigned to this vulnerability.
A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is.
MITIGATIONS. EFACEC released BCU 500 versions 4.08 to mitigate this vulnerability.
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.
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.
This Cyber News was published on www.cisa.gov. Publication date: Tue, 19 Dec 2023 17:10:05 +0000