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Improper authorization checks in documents

Platform: ownCloud Server

Versions: 6.0.3,

Date: 5/24/2013

Risk level: Medium

Description

Due to not verifying whether an user has permission to rename files of other users an authenticated user could rename files of other users without permission.

Affected Software

  • ownCloud Server < 6.0.3 (CVE-2014-3834)

Action Taken

We reviewed the access-control of the documents application and ensured that permissions are checked properly for every action.

Acknowledgements

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.

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