Admin Custom Login WordPress plugin affected by persistent Cross-Site Scripting via Logo URL field

------------------------------------------------------------------------
Admin Custom Login WordPress plugin affected by persistent Cross-Site
Scripting via Logo URL field
------------------------------------------------------------------------
Burak Kelebek, July 2016

------------------------------------------------------------------------
Abstract
------------------------------------------------------------------------
A persistent Cross-Site Scripting vulnerability has been encountered in
the Admin Custom Login WordPress plugin. This issue allows an attacker
to perform a wide variety of actions, such as stealing Administrators
session tokens, or performing arbitrary actions on their behalf. The
"logo_url" field does not validate <script> tags and does not perform
output encoding.

------------------------------------------------------------------------
OVE ID
------------------------------------------------------------------------
OVE-20160712-0002

------------------------------------------------------------------------
Tested versions
------------------------------------------------------------------------
This issue was succesfully tested on the Admin Custom Login WordPress
plugin version 2.4.5.2.

------------------------------------------------------------------------
Fix
------------------------------------------------------------------------
There is currently no fix available.

------------------------------------------------------------------------
Details
------------------------------------------------------------------------
https://sumofpwn.nl/advisory/2016/admin_custom_login_wordpress_plugin_affected_by_persistent_cross_site_scripting_via_logo_url_field.html

------------------------------------------------------------------------
Summer of Pwnage (https://sumofpwn.nl) is a Dutch community project. Its
goal is to contribute to the security of popular, widely used OSS
projects in a fun and educational way.