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Several CSRF security fixes

Platform: ownCloud Server

Versions: 4.0.6,

Date: 7/1/2012

Risk level: Medium


Multiple cross-site request forgery (CSRF) vulnerabilities in ownCloud before 4.0.6 allow remote attackers to hijack the authentication of arbitrary users for requests that use

  • addBookmark.php in bookmarks/ajax/
  • delBookmark.php in bookmarks/ajax/
  • editBookmark.php in bookmarks/ajax/
  • calendar/delete.php in calendar/ajax/
  • calendar/edit.php in calendar/ajax/
  • calendar/new.php in calendar/ajax/
  • calendar/update.php in calendar/ajax/
  • event/delete.php in calendar/ajax/
  • event/edit.php in calendar/ajax/
  • event/move.php in calendar/ajax/
  • event/new.php in calendar/ajax/
  • import/import.php in calendar/ajax/
  • settings/setfirstday.php in calendar/ajax/
  • settings/settimeformat.php in calendar/ajax/
  • share/changepermission.php in calendar/ajax/
  • share/share.ph in calendar/ajax/
  • share/unshare.php in calendar/ajax/
  • external/ajax/setsites.php in apps/
  • files/ajax/delete.php in apps/
  • files/ajax/move.php in apps/
  • files/ajax/newfile.php in apps/
  • files/ajax/newfolder.php in apps/
  • files/ajax/rename.php in apps/
  • files_sharing/ajax/email.php in apps/
  • files_sharing/ajax/setpermissions.php in apps/
  • files_sharing/ajax/share.php in apps/
  • files_sharing/ajax/toggleresharing.php in apps/
  • files_sharing/ajax/togglesharewitheveryone.php in apps/
  • files_sharing/ajax/unshare.php in apps/
  • files_texteditor/ajax/savefile.php in apps/
  • files_versions/ajax/rollbackVersion.php in apps/
  • gallery/ajax/createAlbum.php in apps/
  • gallery/ajax/sharing.php in apps/
  • tasks/ajax/addtask.php in apps/
  • tasks/ajax/addtaskform.php in apps/
  • tasks/ajax/delete.php in apps/
  • tasks/ajax/edittask.php in apps/

or administrators for requests that use

  • changepassword.php in settings/ajax/
  • creategroup.php in settings/ajax/
  • createuser.php in settings/ajax/
  • disableapp.php in settings/ajax/
  • enableapp.php in settings/ajax/
  • lostpassword.php in settings/ajax/
  • removegroup.php in settings/ajax/
  • removeuser.php in settings/ajax/
  • setlanguage.php in settings/ajax/
  • setloglevel.php in settings/ajax/
  • setquota.php in settings/ajax/
  • togglegroups.php in settings/ajax/

Affected Software

  • ownCloud Server < 4.0.6 (CVE-2012-4393)

Action Taken

It is recommended that all instances are upgraded to ownCloud Server 4.0.7.


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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