GLSA 200701-22: Squid: Multiple Denial of Service vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Squid: Multiple Denial of Service vulnerabilities
Date:	01/25/2007
Bugs:	#162364
ID:	200701-22

Synopsis

Two vulnerabilities have been found in Squid which make it susceptible to Denial of Service attacks.

Background

Squid is a multi-protocol proxy server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-proxy/squid	< 2.6.7	>= 2.6.7	All supported architectures

Description

Squid fails to correctly handle ftp:// URI's. There is also an error in the external_acl queue which can cause an infinite looping condition.

Impact

An attacker could attempt to retrieve a specially crafted URI via a Squid server causing the service to crash. If an attacker could generate a sufficiently high load on the Squid services, they could cause a Denial of Service by forcing Squid into an infinite loop.

Workaround

There is no known workaround at this time.

Resolution

All Squid users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-proxy/squid-2.6.7"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200701-22.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.