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WordPress User Account Enumeration Weakness Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA23621  
Release Date: 2007-01-05
Last Update: 2007-05-25

Critical:
Not critical
Impact: Exposure of system information
Where: From remote
Solution Status: Unpatched

Software:Wordpress 1.x
WordPress 2.x

This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released!


Description:
A weakness has been discovered in WordPress, which can be exploited by malicious people to identify valid user accounts.

Different error messages are returned depending on whether an unsuccessful login attempt is performed with a valid or invalid username.

Also, the product does not block people after a certain amount of failed login attempts.

The weakness is confirmed in version 2.0.5 and reported in version 1.5. Other versions may also be affected.

Solution:
Edit the source code to ensure that a single general error message is returned on a failed login.

Restrict access to the "wp-login.php" script (e.g. with ".htaccess").

Provided and/or discovered by:
jk and Kad

Changelog:
2007-05-25: Updated "Description", "Provided and/or discovered by", and "Original Advisory" sections.

Original Advisory:
http://trac.wordpress.org/ticket/1129



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

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