CVE-2023-46724
SQUID-2023:4 Denial of Service in SSL Certificate validation
- State
- Published
- Severity
- 8.6 High
- Published
- Nov 1, 2023
- Updated
- Feb 13, 2025
- Reserved
- Oct 25, 2023
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
squidsquid-cache |
|
References
- https://github.com/squid-cache/squid/security/advisories/GHSA-73m6-jm96-c6r3
- https://github.com/squid-cache/squid/commit/b70f864940225dfe69f9f653f948e787f99c3810
- http://www.squid-cache.org/Versions/v5/SQUID-2023_4.patch
- http://www.squid-cache.org/Versions/v6/SQUID-2023_4.patch
- https://security.netapp.com/advisory/ntap-20231208-0001/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/
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