GLSA 200903-38: Squid: Multiple Denial of Service vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Squid: Multiple Denial of Service vulnerabilities
Date:	03/24/2009
Bugs:	#216319, #257585
ID:	200903-38

Synopsis

Multiple vulnerabilities have been found in Squid which allow for remote Denial of Service attacks.

Background

Squid is a full-featured web proxy cache.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-proxy/squid	< 2.7.6	>= 2.7.6	All supported architectures

Description

The arrayShrink function in lib/Array.c can cause an array to shrink to 0 entries, which triggers an assert error. NOTE: this issue is due to an incorrect fix for CVE-2007-6239 (CVE-2008-1612).
An invalid version number in a HTTP request may trigger an assertion in HttpMsg.c and HttpStatusLine.c (CVE-2009-0478).

Impact

The issues allows for Denial of Service attacks against the service via an HTTP request with an invalid version number and other specially crafted requests.

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-2.7.6"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200903-38.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.