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Message-ID: <6c0b04dc-eeb8-2504-505d-f6fd098d1455@securify.nl>
Date: Wed, 1 Mar 2017 07:04:19 +0100
From: Summer of Pwnage <lists@...urify.nl>
To: fulldisclosure@...lists.org
Subject: [FD] Cross-Site Scripting vulnerability in Gwolle Guestbook
 WordPress Plugin

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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.

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OVE ID
------------------------------------------------------------------------
OVE-20160712-0033

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Tested versions
------------------------------------------------------------------------
This issue was succesfully tested on the Gwolle Guestbook WordPress
Plugin version 1.7.4.

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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.

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