Squid < 2.5.STABLE5 %xx URL Encoding ACL Bypass

high Nessus Network Monitor Plugin ID 1212

Synopsis

The remote proxy server is vulnerable to a flaw which allows for the bypassing of authentication

Description

The remote Squid caching proxy, according to its version number, is vulnerable to a flaw that may allow an attacker to gain access to unauthorized resources. The flaw in itself consists of sending a malformed username containing the %00 (null) character, that may allow an attacker to access otherwise restricted resources.

Solution

Upgrade to Squid 2.5.STABLE5 or later.

Plugin Details

Severity: High

ID: 1212

Family: Web Servers

Published: 8/20/2004

Updated: 3/6/2019

Nessus ID: 12124

Risk Information

VPR

Risk Factor: Medium

Score: 6.1

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 7

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

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

Patch Publication Date: 3/15/2004

Vulnerability Publication Date: 3/15/2004

Reference Information

CVE: CVE-2004-0189

BID: 9778

Detections

Analytics