< go back to overview

Auth bypass in /lib/base.php

Platform: ownCloud Server

Versions: 4.0.8,

Date: 8/10/2012

Risk level: High


/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.

Affected Software

  • ownCloud Server < 4.0.8 (CVE-2012-5336)

Action Taken

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:

  • Lukas Reschke – ownCloud Inc. (lukas@owncloud.org) – Vulnerability discovery and disclosure.

Share this

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.