Summary
Successful exploitation of this vulnerability could allow a remote attacker to prevent legitimate users from logging into the web server function for a certain period, resulting in a denial-of-service condition. The impact of this vulnerability will persist while the attacker continues to attempt the attack.
Vulnerabilities 1
-
Medium 5.3
Denial-of-Service(DoS) Vulnerability in Web server function on MELSEC Series CPU module
Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web s…
Revision history
-
#2
Update A - Updated all iterations of MELSEC iQ-F to MELSEC iQ-F/iQ-R throughout the document, added iQ-R products and versions to Affected Products section, and additional mitigations in Mitigation Section.
-
#1
Initial Publication
References
-
ICSA Advisory ICSA-23-306-02 - Web Version
https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-02
-
Recommended Practices
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
-
Recommended Practices
https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
-
Recommended Practices
https://www.cisa.gov/topics/industrial-control-systems
-
Recommended Practices
https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
-
Recommended Practices
https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
-
Recommended Practices
https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B