Security Advisory

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user_migrate: Local file disclosure (oC-SA-2013-010)

14th March 2013

Risk level: High


Incomplete blacklist vulnerability in lib/migrate.php in ownCloud before 4.0.13 and 4.5.8 allows an authenticated remote attacker to import arbitrary files on the server inside his user account.

Affected Software

  • ownCloud Server < 4.5.8 (CVE-2013-1851)
  • ownCloud Server < 4.0.13 (CVE-2013-1851)

Action Taken

It is recommended that all instances are upgraded to ownCloud Server 4.5.9 or 4.0.13.


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

  • Lukas Reschke - ownCloud Inc. ( - Vulnerability discovery and disclosure.