Vulnerability Description
Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. 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. As a workaround, prevent access to Cache Manager using Squid's main access control: `http_access deny manager`.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Squid-Cache | Squid | >= 5.0, <= 5.9 |
Related Weaknesses (CWE)
References
- http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patchMailing ListPatch
- http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patchMailing ListPatch
- https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efdPatch
- https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd2Patch
- https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rxVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://megamansec.github.io/Squid-Security-Audit/stream-assert.htmlExploit
- https://security.netapp.com/advisory/ntap-20240208-0010/
- http://www.squid-cache.org/Versions/v5/SQUID-2023_11.patchMailing ListPatch
- http://www.squid-cache.org/Versions/v6/SQUID-2023_11.patchMailing ListPatch
- https://github.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efdPatch
- https://github.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd2Patch
- https://github.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rxVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
FAQ
What is CVE-2024-23638?
CVE-2024-23638 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This proble...
How severe is CVE-2024-23638?
CVE-2024-23638 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-23638?
Check the references section above for vendor advisories and patch information. Affected products include: Squid-Cache Squid.