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Session Fixation

Platform: ownCloud Server

Versions: 6.0.2,

Date: 7/3/2014

Risk level: Medium

Description

Due to authenticating a user without invalidating any existing session identifier an attacker has the opportunity to steal authenticated sessions. A successful exploit requires that PHP is configured to accept session parameters via GET.

Affected Software

  • ownCloud Server < 6.0.2 (CVE-2014-2047)

Action Taken

The session is now regenerated after a successful login.

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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