Description
Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives.
Remediation
References
Related Vulnerabilities
WordPress Plugin Duplicate Page SQL Injection (3.3)
axios Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2023-45857)
Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2015-3180)
Squid Out-of-bounds Read Vulnerability (CVE-2021-28116)
Rukovoditel Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2020-11818)