wp-includes/pluggable.php in WordPress before 3.9.2 rejects invalid CSRF nonces with a different timing depending on which characters in the nonce are incorrect, which makes it easier for remote attackers to bypass a CSRF protection mechanism via a brute-force attack.
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
Link | Tags |
---|---|
http://www.debian.org/security/2014/dsa-3001 | vendor advisory |
https://wordpress.org/news/2014/08/wordpress-3-9-2/ | patch vendor advisory |
https://core.trac.wordpress.org/changeset/29384 | |
http://openwall.com/lists/oss-security/2014/08/13/3 | mailing list |