A vulnerability has been discovered in WordPress, which can be exploited by malicious users to conduct SQL injection attacks.
Input passed to the "wp.suggestCategories" method in xmlrpc.php is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
Successful exploitation allows e.g. retrieving usernames and password hashes, but requires valid user credentials and knowledge of the database table prefix.
The vulnerability is confirmed in version 2.2. Prior versions may also be affected.
Solution: Update to version 2.2.1.
Provided and/or discovered by: Alexander Concha and Slappter
Original Advisory: http://milw0rm.com/exploits/4039
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