Description
Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6.
Remediation
References
Related Vulnerabilities
MySQL CVE-2016-0652 Vulnerability (CVE-2016-0652)
OpenVPN AS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2013-2061)
Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2013-2243)
WordPress Plugin YITH WooCommerce Affiliates Security Bypass (1.6.3)