/lib/base.php before ownCloud 4.0.8 does not properly validate the user_id session variable via WebDAV, which allows authenticated attackers to gain access to other users files.
It is recommended that all instances are upgraded to ownCloud Server 4.0.8.
The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory:
CPE | Name | Operator | Version |
---|---|---|---|
owncloud server | lt | 4.0.8 |