CVE-2024-23638

SQUID-2023:11 Denial of Service in Cache Manager

Published Jan 23, 2024 CVSS 3.1 · 6.5 Medium EPSS 60.1% KEV · Not listed
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

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-5637-1 squid security update
Ubuntu USN Ubuntu USN USN-6728-1 Squid vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 17, 2025, 9:19 PM
Reserved
Jan 19, 2024, 12:18 AM
Status
Modified
Published
Jan 24, 2024, 12:15 AM
Modified
Jun 17, 2026, 7:13 AM
Severity
Moderate
Public date
Jan 24, 2024, 12:00 AM