GLSA-200409-04 : Squid: Denial of service when using NTLM authentication

This script is Copyright (C) 2004-2015 Tenable Network Security, Inc.

Synopsis :

The remote Gentoo host is missing one or more security-related

Description :

The remote host is affected by the vulnerability described in GLSA-200409-04
(Squid: Denial of service when using NTLM authentication)

Squid 2.5.x versions contain a bug in the functions ntlm_fetch_string()
and ntlm_get_string() which lack checking the int32_t offset 'o' for
negative values.

Impact :

A remote attacker could cause a denial of service situation by sending
certain malformed NTLMSSP packets if NTLM authentication is enabled.

Workaround :

Disable NTLM authentication by removing any 'auth_param ntlm program
...' directives from squid.conf or use ntlm_auth from Samba-3.x.

See also :

Solution :

All Squid users should upgrade to the latest stable version:
# emerge sync
# emerge -pv '>=net-www/squid-2.5.6-r2'
# emerge '>=net-www/squid-2.5.6-r2'

Risk factor :

Medium / CVSS Base Score : 5.0

Family: Gentoo Local Security Checks

Nessus Plugin ID: 14651 (gentoo_GLSA-200409-04.nasl)

Bugtraq ID:

CVE ID: CVE-2004-0832

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