GLSA-200410-15 : Squid: Remote DoS vulnerability

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


Synopsis :

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

Description :

The remote host is affected by the vulnerability described in GLSA-200410-15
(Squid: Remote DoS vulnerability)

A parsing error exists in the SNMP module of Squid where a
specially-crafted UDP packet can potentially cause the server to
restart, closing all current connections. This vulnerability only
exists in versions of Squid compiled with the 'snmp' USE flag.

Impact :

An attacker can repeatedly send these malicious UDP packets to the
Squid server, leading to a denial of service.

Workaround :

Disable SNMP support or filter the port that has SNMP processing
(default is 3401) to allow only SNMP data from trusted hosts.
To disable SNMP support put the entry snmp_port 0 in the squid.conf
configuration file.
To allow only the local interface to process SNMP, add the entry
'snmp_incoming_address 127.0.0.1' in the squid.conf configuration file.

See also :

http://www.nessus.org/u?d34310cf
http://www.gentoo.org/security/en/glsa/glsa-200410-15.xml

Solution :

All Squid users should upgrade to the latest version:
# emerge sync
# emerge -pv '>=net-proxy/squid-2.5.7'
# emerge '>=net-proxy/squid-2.5.7'

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 15512 (gentoo_GLSA-200410-15.nasl)

Bugtraq ID:

CVE ID: CVE-2004-0918