A Cross-Site Scripting vulnerability was found in the Tribulant Slideshow Galleries 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/force a logged on WordPress Administrator into opening a malicious website.
For feedback or questions about this advisory mail us at sumofpwn at securify.nl
This issue has been found during the Summer of Pwnage hacker event, running from July 1-29. A community summer event in which a large group of security bughunters (worldwide) collaborate in a month of security research on Open Source Software (WordPress this time). For fun. The event is hosted by Securify in Amsterdam.
OVE-20160714-0016
This issue was successfully tested on Tribulant Slideshow Galleries WordPress Plugin version 1.6.3.
A fix for this issue is not available.
The Tribulant Slideshow Galleries WordPress Plugin allows you to feature WordPress content in a beautiful and fast JavaScript-powered slideshow gallery. A Cross-Site Scripting vulnerability has been found in the Tribulant Slideshow Galleries 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/force a logged on WordPress Administrator into opening a malicious website.
A reflected cross site scripting vulnerability exists in the plugin Slideshow Galleries. This issue is due to to the fact that the view/admin/galleries/index.php file uses the following code to output an HREF link:
"<a href="<?php echo GalleryHtmlHelper::retainquery('orderby=id&order=' .(($orderby == "id") ? $otherorder : "asc")); ?>">"
The above code fails to perform any output encoding on the retainquery method, thus allowing the tag to be closed and to inject a script element: /wp-admin/admin.php?page=slideshow-galleries&method=save"><script>alert(1)<%2fscript>pwned
Please note that this particular method is called another 19 times in the project. This indicates that more similar vulnerabilities could exist in the code.
