WordPress: Arbitrary command execution

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200606-08 / wordpress
Release Date	June 09, 2006
Latest Revision	June 10, 2006: 02
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-apps/wordpress	< 2.0.3	>= 2.0.3	All supported architectures

Related bugreports: #134397

Synopsis

WordPress fails to sufficiently check the format of cached username data.

2. Impact Information

Background

WordPress is a PHP and MySQL based content management and publishing system.

Description

rgod discovered that WordPress insufficiently checks the format of cached username data.

Impact

An attacker could exploit this vulnerability to execute arbitrary commands by sending a specially crafted username. As of Wordpress 2.0.2 the user data cache is disabled by default.

3. Resolution Information

Workaround

There are no known workarounds at this time.

Resolution

All WordPress users should upgrade to the latest available version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/wordpress-2.0.3"

4. References

Updated June 09, 2006

Summary: This is a Gentoo Linux Security Advisory

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