Squid < 7.2 Information Disclosure (SQUID-2025:2)

critical Nessus Plugin ID 272042

Synopsis

The remote proxy server is affected by an information disclosure vulnerability

Description

The version of Squid on the remote host is prior to 7.2. It is, therefore, affected by an information disclosure vulnerability:

- Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off. (CVE-2025-62168)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Squid version 7.2 or later.

Plugin Details

Severity: Critical

ID: 272042

File Name: squid_7_2.nasl

Version: 1.1

Type: remote

Family: Firewalls

Published: 10/30/2025

Updated: 10/30/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.1

CVSS v2

Risk Factor: High

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2025-62168

CVSS v3

Risk Factor: Critical

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Vulnerability Information

CPE: cpe:/a:squid-cache:squid

Required KB Items: Settings/ParanoidReport, installed_sw/Squid

Patch Publication Date: 10/16/2025

Vulnerability Publication Date: 10/16/2025

Reference Information

CVE: CVE-2025-62168

Detections

Analytics