[SA23621] WordPress User Account Enumeration Weakness

[Secunia Security Advisories <[EMAIL PROTECTED]>]

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TITLE:
WordPress User Account Enumeration Weakness

SECUNIA ADVISORY ID:
SA23621

VERIFY ADVISORY:
http://secunia.com/advisories/23621/

CRITICAL:
Not critical

IMPACT:
Exposure of system information

WHERE:
>From remote

SOFTWARE:
WordPress 2.x
http://secunia.com/product/6745/

DESCRIPTION:
Kad has discovered a weakness 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. 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:
Kad

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