GLSA 200502-25: Squid: Denial of Service through DNS responses

http://security.gentoo.org/

Severity:	normal
Title:	Squid: Denial of Service through DNS responses
Date:	02/18/2005
Bugs:	#81997
ID:	200502-25

Synopsis

Squid contains a bug in the handling of certain DNS responses resulting in a Denial of Service.

Background

Squid is a full-featured Web proxy cache designed to run on Unix-like systems. It supports proxying and caching of HTTP, FTP, and other protocols, as well as SSL support, cache hierarchies, transparent caching, access control lists and many other features.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-proxy/squid	< 2.5.8	>= 2.5.8	All supported architectures

Description

Handling of certain DNS responses trigger assertion failures.

Impact

By returning a specially crafted DNS response an attacker could cause Squid to crash by triggering an assertion failure.

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-2.5.8"

References

CAN-2005-0446

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200502-25.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.