Description
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.
Published: 2023-12-04
Score: 8.6 High
EPSS: 2.1% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2023-53281 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.
Ubuntu USN Ubuntu USN USN-6728-1 Squid vulnerabilities
Ubuntu USN Ubuntu USN USN-6728-3 Squid vulnerability
History

Wed, 13 Nov 2024 02:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8

Sat, 09 Nov 2024 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux

Tue, 15 Oct 2024 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Redhat Enterprise Linux
Squid-cache Squid
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-02-13T17:18:39.710Z

Reserved: 2023-11-24T16:45:24.312Z

Link: CVE-2023-49288

cve-icon Vulnrichment

Updated: 2024-08-02T21:53:44.876Z

cve-icon NVD

Status : Modified

Published: 2023-12-04T23:15:27.477

Modified: 2024-11-21T08:33:11.613

Link: CVE-2023-49288

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-12-05T00:00:00Z

Links: CVE-2023-49288 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses