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CVE-2024-23638

squid: vulnerable to a Denial of Service attack against Cache Manager error responses

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Severity

Moderate

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · January 24, 2024

Updated · November 21, 2025

Description

A flaw was found in Squid, resulting in a potential denial of service attack targeting Cache Manager error responses. This issue enables a trusted client to execute a denial of service by manipulating the generation of error pages for Client Manager reports.

Statement

The identified vulnerability in Squid, leading to a Denial of Service attack against Cache Manager error responses, is considered a moderate issue. While it requires a trusted client for exploitation, the potential impact lies in the ability to disrupt normal functioning by manipulating error pages during the generation of Client Manager reports.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Restrict entry to Cache Manager through Squid's primary access control: http_access deny manager

CVSS / CWE

CVSS 3.1 · 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-825 · Expired Pointer Dereference