GLSA 200703-27: Squid: Denial of Service

Severity:low
Title:Squid: Denial of Service
Date:03/31/2007
Bugs: #171681
ID:200703-27

Synopsis

Squid is affected by a Denial of Service vulnerability.

Background

Squid is a multi-protocol proxy server.

Affected packages

Package Vulnerable Unaffected Architecture(s)
net-proxy/squid < 2.6.12 >= 2.6.12 All supported architectures

Description

Squid incorrectly handles TRACE requests that contain a "Max-Forwards" header field with value "0" in the clientProcessRequest() function.

Impact

A remote attacker can send specially crafted TRACE HTTP requests that will terminate the child process. A quickly repeated attack will lead to a Denial of Service.

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-2.6.12"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200703-27.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.

License

Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

Thank you!