CVE-2023-46724

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CVE-2023-46724

Summary: SQUID-2023:4 Denial of Service in SSL Certificate validation

Details: 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.

References: http://www.squid-cache.org/Versions/v5/SQUID-2023_4.patch, http://www.squid-cache.org/Versions/v6/SQUID-2023_4.patch, https://lists.fedoraproject.org/archives/list/[email protected]/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/, https://lists.fedoraproject.org/archives/list/[email protected]/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/46xxx/CVE-2023-46724.json, https://github.com/squid-cache/squid/security/advisories/GHSA-73m6-jm96-c6r3, https://nvd.nist.gov/vuln/detail/CVE-2023-46724, https://security.netapp.com/advisory/ntap-20231208-0001/, https://github.com/squid-cache/squid/commit/b70f864940225dfe69f9f653f948e787f99c3810