ownCloud server 9.1.3User enumeration with error messages
Information disclosure in email field dialog at sharing
Flooding logfiles with a 1 Bit BMP File
ownCloud desktop 2.2.3Local Code Injection
ownCloud mobile iOS 3.4.4Improper validation of certificates within the iOS application
Credentials potentially leaked to other configured ownCloud instance
Local file disclosure when running on Windows (oC-SA-2013-016)
11th April 2013
Risk level: High
Due to not rejecting "\" as path separator in all ownCloud versions prior to 5.0.4 including the 4.x branch an authenticated remote attacker is able to download arbitrary files from the server when running under Windows.
This vulnerability exists inside our used DAV implementation "SabreDAV" and was found by the ownCloud security team. SabreDAV released fixed versions to address this problem.
- ownCloud Server < 5.0.4 (CVE-2013-1939)
- ownCloud Server < 4.5.9 (CVE-2013-1939)
- ownCloud Server < 4.0.14 (CVE-2013-1939)
It is recommended that all instances are upgraded to ownCloud Server 5.0.4, 4.5.9 or 4.0.14.
The ownCloud team thanks the following people for their research and responsible disclosure of the above advisory:
- Lukas Reschke - ownCloud Inc. (firstname.lastname@example.org) - Vulnerability discovery and disclosure.