------------------------------------------------------------------------ Cross-Site Scripting vulnerability in Gwolle Guestbook WordPress Plugin ------------------------------------------------------------------------ Radjnies Bhansingh, July 2016 ------------------------------------------------------------------------ Abstract ------------------------------------------------------------------------ A Cross-Site Scripting vulnerability was found in the Gwolle Guestbook 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. In order to exploit this issue, the attacker has to lure a WordPress user with editor or administrator privileges into opening a malicious website. ------------------------------------------------------------------------ OVE ID ------------------------------------------------------------------------ OVE-20160712-0033 ------------------------------------------------------------------------ Tested versions ------------------------------------------------------------------------ This issue was succesfully tested on the Gwolle Guestbook WordPress Plugin version 1.7.4. ------------------------------------------------------------------------ Fix ------------------------------------------------------------------------ This issue was fixed in Gwolle Guestbook version version 2.1.1. The most recent version of Gwolle Guestbook can be obtained from the following location: https://wordpress.org/plugins/gwolle-gb/ ------------------------------------------------------------------------ Details ------------------------------------------------------------------------ https://sumofpwn.nl/advisory/2016/cross_site_scripting_vulnerability_in_gwolle_guestbook_wordpress_plugin.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.
