WordPress: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200701-10 / wordpress
Release Date	January 15, 2007
Latest Revision	January 15, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-apps/wordpress	< 2.0.6	>= 2.0.6	All supported architectures

Related bugreports: #159229

Synopsis

WordPress is vulnerable to SQL injection, information disclosure, and cross-site scripting attacks.

2. Impact Information

Background

WordPress is a popular personal publishing platform with a web interface.

Description

When decoding trackbacks with alternate character sets, WordPress does not correctly sanitize the entries before further modifying a SQL query. WordPress also displays different error messages in wp-login.php based upon whether or not a user exists. David Kierznowski has discovered that WordPress fails to properly sanitize recent file information in /wp-admin/templates.php before sending that information to a browser.

Impact

An attacker could inject arbitrary SQL into WordPress database queries. An attacker could also determine if a WordPress user existed by trying to login as that user, better facilitating brute force attacks. Lastly, an attacker authenticated to view the administrative section of a WordPress instance could try to edit a file with a malicious filename; this may cause arbitrary HTML or JavaScript to be executed in users' browsers viewing /wp-admin/templates.php.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All WordPress users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/wordpress-2.0.6"

4. References

Updated January 15, 2007

Summary: This is a Gentoo Linux Security Advisory

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