GLSA 200508-07: AWStats: Arbitrary code execution using malicious Referrer information

http://security.gentoo.org/

Severity:	high
Title:	AWStats: Arbitrary code execution using malicious Referrer information
Date:	08/16/2005
Bugs:	#102145
ID:	200508-07

Synopsis

AWStats fails to validate certain log input, which could lead to the execution of arbitrary Perl code during the generation of the statistics.

Background

AWStats is an advanced log file analyzer and statistics generator. In HTTP reports it parses Referrer information in order to display the most common Referrer values that caused users to visit the website.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
www-misc/awstats	< 6.5	>= 6.5	All supported architectures

Description

When using a URLPlugin, AWStats fails to sanitize Referrer URL data before using them in a Perl eval() routine.

Impact

A remote attacker can include arbitrary Referrer information in a HTTP request to a web server, therefore injecting tainted data in the log files. When AWStats is run on this log file, this can result in the execution of arbitrary Perl code with the rights of the user running AWStats.

Workaround

Disable all URLPlugins in the AWStats configuration.

Resolution

All AWStats users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-misc/awstats-6.5"

Note: Users with the vhosts USE flag set should manually use webapp-config to finalize the update.

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200508-07.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.