Bug 2252918 (CVE-2023-49288) - CVE-2023-49288 squid: Use-After-Free in the HTTP Collapsed Forwarding Feature
Summary: CVE-2023-49288 squid: Use-After-Free in the HTTP Collapsed Forwarding Feature
Keywords:
Status: NEW
Alias: CVE-2023-49288
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2252919
Blocks: 2252929
TreeView+ depends on / blocked
 
Reported: 2023-12-05 09:42 UTC by Pedro Sampaio
Modified: 2023-12-20 14:51 UTC (History)
0 users

Fixed In Version: squid 6.0.1
Doc Type: ---
Doc Text:
A flaw was found in Squid. The use of the HTTP Collapsed Forwarding configuration may allow an attacker to perform a denial of service remotely.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Pedro Sampaio 2023-12-05 09:42:24 UTC 
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.

References:

https://github.com/squid-cache/squid/security/advisories/GHSA-rj5h-46j6-q2g5
Comment 1 Pedro Sampaio 2023-12-05 09:42:40 UTC 
Created squid tracking bugs for this issue:

Affects: fedora-all [bug 2252919]
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