The remote web server is hosting a web application that is vulnerable to a remote code execution attack.
Description
The remote web server hosts a Drupal install that uses the FileField Source module. Versions of FileField Sources earlier than 6.x-1.2 are potentially affected by a remote code execution vulnerability because the application fails to properly sanitize the file extensions of files that have been transferred from remote servers.
Solution
Upgrade to Drupal FileField Sources module 6.x-1.2 or later.