CVE-2023-50269
SQUID-2023:10 Denial of Service in HTTP Request parsing
- State
- Published
- Severity
- 8.6 High
- Published
- Dec 14, 2023
- Updated
- May 21, 2025
- Reserved
- Dec 5, 2023
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.
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
- CWE-674 Uncontrolled Recursion
Affected Products
| Product | Versions |
|---|---|
squidsquid-cache |
|
References
- https://github.com/squid-cache/squid/security/advisories/GHSA-wgq4-4cfg-c4x3
- http://www.squid-cache.org/Versions/v5/SQUID-2023_10.patch
- http://www.squid-cache.org/Versions/v6/SQUID-2023_10.patch
- 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/
- https://lists.debian.org/debian-lts-announce/2024/01/msg00003.html
- https://security.netapp.com/advisory/ntap-20240119-0005/
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