JomSocial 1.8.8 Shell Upload Vulnerability

Posted in Joomla!
2010-09-30 22:05:36 +0000 UTC

There is a file upload vulnerability in version 1.8.8 and earlier of JomSocial, the popular community extension for Joomla!.

Successful exploitation of this exploit requires the site to be configured to allow users to upload video files directly, which is disabled by default. If this feature is enabled, any file uploaded via the "add video" upload form will end up in http://[victim]/images/originalvideos/[your account's user id]/[unique file name]. This folder is not protected with an index, so if indexes are allowed retrieving the shell's filename is trivial.

Listed on the JomSocial Changelog as "BUG: 4495"