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CVE-2024-23638

6.5 · MEDIUM

Squid is a caching proxy for the Web.

Published Jan 24, 2024CWE-825EPSS 60.05%

Overview

CVE-2024-23638 is a medium-severity vulnerability. It was published on January 24, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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`.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.squid-cache.org/Versions/v5/SQUID-2023_11.patchRefwww.squid-cache.org/Versions/v6/SQUID-2023_11.patchGitHubgithub.com/squid-cache/squid/commit/290ae202883ac28a48867079c2fb34c40efd382bGitHubgithub.com/squid-cache/squid/commit/e8118a7381213f5cfcdeb4cec1d2d854bfd261c8GitHubgithub.com/squid-cache/squid/security/advisories/GHSA-j49p-553x-48rxReflists.fedoraproject.org/archives/list/[email protected]/message/7R4KPSO3MQT3KAOZV7LC2GG3CYMCGK7H/Reflists.fedoraproject.org/archives/list/[email protected]/message/XWQHRDRHDM5PQTU6BHH4C5KGL37X6TVI/Refmegamansec.github.io/Squid-Security-Audit/stream-assert.htmlRefsecurity.netapp.com/advisory/ntap-20240208-0010/Refwww.squid-cache.org/Versions/v5/SQUID-2023_11.patch

How CyberStrike helps

Frequently asked questions

What is CVE-2024-23638?

CVE-2024-23638 is a medium-severity vulnerability. It was published on January 24, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-23638?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-23638?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-23638?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-23638 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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