WordPress Member Approval Cross Site Request Forgery

`Details  
================  
Software: Member Approval  
Version: 131109  
Homepage: http://wordpress.org/plugins/member-approval/  
Advisory ID: dxw-1970-1172  
CVE: CVE-2014-3850  
CVSS: 5.8 (Medium; AV:N/AC:M/Au:N/C:P/I:P/A:N)  
  
Description  
================  
CSRF in Member Approval 131109 permits unapproved registrations  
  
Vulnerability  
================  
By convincing a logged-in administrator to visit a link of an attacker’s choosing an attacker can reset the plugin’s options to the defaults, meaning that registrations will become open to everybody without requiring approval.  
  
Proof of concept  
================  
By clicking the submit button here, an admin will reset the plugin to the defaults (with some slight modifications there may be a stored XSS here too, but I did not investigate further):  
<form method=\"post\" action=\"http://localhost/wp-admin/options-general.php?page=member-approval\">  
<input type=\"submit\">  
</form>  
  
Note: no admin action is necessary assuming the attacker can persuade an admin to visit a page under their control, as the form can be submitted using Javascript.  
  
Mitigations  
================  
Disable the plugin until a fix is available.  
  
Disclosure policy  
================  
dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/  
  
Please contact us on [email protected] to acknowledge this report if you received it via a third party (for example, [email protected]) as they generally cannot communicate with us on your behalf.  
  
This vulnerability will be published if we do not receive a response to this report with 14 days.  
  
Timeline  
================  
  
2014-04-08: Discovered  
2014-04-10: Reported to [email protected]  
2014-06-10: No response from author. Published.  
  
Discovered by dxw:  
================  
Tom Adams  
=======  
  
Discovered by dxw:  
================  
Tom Adams  
  
Please visit security.dxw.com for more information.  
  
  
  
  
`