Command injection when using external SMB storage - ownCloud

The external legacy SMB storage (not using php-libsmbclient) of ownCloud was not properly neutralizing all special elements which allows an adversary to execute arbitrary SMB commands.

Effectively this allows an attacker to gain access to any file on the system or overwrite it, potentially leading to a PHP code execution.

Affected Software

• ownCloud Server < 8.1.2 (CVE-2015-7698)
  • core/8c145541f65592a4d2d7de50ecfa1b0698496cb8

Action Taken

The vulnerable library is now properly handling potentially dangerous characters.

Acknowledgements

The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory:

• Lukas Reschke - ownCloud Inc. ([email protected]) - Vulnerability discovery and disclosure.