CVE-2023-50269

SQUID-2023:10 Denial of Service in HTTP Request parsing

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.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 1.35% Top 25%
Third-Party Advisory github.com
Affected: squid-cache squid
Published at:
Updated at:

References

Link Tags
https://github.com/squid-cache/squid/security/advisories/GHSA-wgq4-4cfg-c4x3 third party advisory
http://www.squid-cache.org/Versions/v5/SQUID-2023_10.patch broken link
http://www.squid-cache.org/Versions/v6/SQUID-2023_10.patch broken link
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/

Frequently Asked Questions

What is the severity of CVE-2023-50269?
CVE-2023-50269 has been scored as a high severity vulnerability.
How to fix CVE-2023-50269?
To fix CVE-2023-50269, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-50269 being actively exploited in the wild?
It is possible that CVE-2023-50269 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-50269?
CVE-2023-50269 affects squid-cache squid.
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