[MajorSecurity SA-080]WordPress 3.0.1 - Cross Site Scripting Issue

[david.kurz () majorsecurity net]

[MajorSecurity SA-080]WordPress 3.0.1 - Cross Site Scripting Issue

Details
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Product: WordPress 3.0.1
Security-Risk: low
Remote-Exploit: yes
Vendor-URL: http://www.wordpress.org/
Advisory-Status: published

Credits
=============
Discovered by: David Vieira-Kurz of MajorSecurity

Affected Products:
=============
WordPress 3.0.1
Prior versions may also be vulnerable

Description
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"WordPress is web software you can use to create a beautiful website or blog." - from wordpress.org

More Details
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I have discovered some vulnerabilities in WordPress 3.0.1, which can be exploited by malicious people to conduct 
reflected cross-site scripting attacks. Input passed directly to the "checked[0]" parameter in "wp-admin/plugins.php" 
when the "action" parameter is set to "delete-selected" is not properly sanitised before being stored and returned to 
the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an 
affected site.

Solution
=============
Web applications should never trust on user generated input and therefore sanatize all input. Edit the source code to 
ensure that input is properly sanitised.

MajorSecurity
================
MajorSecurity is a German sourcecode audit and penetration testing company which focuses on (web-)application security. 
We offer professional source code audit, penetrationstest and pci dss compliance tests. Visit us at 
http://www.majorsecurity.net/source-code-audit.php

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================
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