CVE-2023-46724 Information

Description

Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using --with-openssl are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition patches addressing this problem for the stable releases can be found in Squid’s patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.

Reference

https://github.com/squid-cache/squid/security/advisories/GHSA-73m6-jm96-c6r3 http://www.squid-cache.org/Versions/v6/SQUID-2023_4.patch http://www.squid-cache.org/Versions/v5/SQUID-2023_4.patch https://github.com/squid-cache/squid/commit/b70f864940225dfe69f9f653f948e787f99c3810