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Use After Free The advisory has been revoked - it doesn't affect any version of package squid  (opens in a new tab)

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4.78% (91st percentile)

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  • Snyk IDSNYK-RHEL9-SQUID-11469237
  • published5 Aug 2025
  • disclosed5 Dec 2023
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Introduced: 5 Dec 2023

CVE-2023-49288  (opens in a new tab)
CWE-416  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid package and not the squid package as distributed by RHEL.

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Affected versions of squid are subject to a a Use-After-Free bug which can lead to a Denial of Service attack via collapsed forwarding. All versions of Squid from 3.5 up to and including 5.9 configured with "collapsed_forwarding on" are vulnerable. Configurations with "collapsed_forwarding off" or without a "collapsed_forwarding" directive are not vulnerable. This bug is fixed by Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should remove all collapsed_forwarding lines from their squid.conf.