Squid %xx URL Encoding ACL Bypass

This script is Copyright (C) 2004-2014 Tenable Network Security, Inc.


Synopsis :

The remote service is vulnerable to an authentication bypass.

Description :

The remote squid caching proxy, according to its version number, is
vulnerable to a flaw that could allow an attacker to gain access to
unauthorized resources.

The flaw itself consists of sending a malformed username containing
the %00 (null) character, which could allow an attacker to access
otherwise restricted resources.

See also :

http://www.squid-cache.org/Advisories/SQUID-2004_1.txt

Solution :

Upgrade to squid 2.5.STABLE6 or newer

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 6.5
(CVSS2#E:H/RL:OF/RC:C)
Public Exploit Available : true

Family: Firewalls

Nessus Plugin ID: 12124 ()

Bugtraq ID: 9778

CVE ID: CVE-2004-0189