A vulnerability has been discovered in Serv-U, which can be exploited by malicious users to bypass certain security restrictions.
The vulnerability is caused due to an error when processing "MKD" commands. This can be exploited to create directories residing outside a given user's home directory via directory traversal attacks (e.g "MKD \..\..\[NEW DIRECTORY]").
The vulnerability is confirmed in version 220.127.116.11. Other versions may also be affected.
Solution: Restrict access to trusted users only.
Provided and/or discovered by: Jonathan Salwan
Original Advisory: http://milw0rm.com/exploits/8211
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