Bypassing File Firewall (oC-SA-2020-002)

Aug 10, 2020

Bypassing File Firewall


Platform: ownCloud Server


Date: 8/3/2020

– Risk: Low
– CVSS v3 Base Score: 1.6
– CVSS v3 Vector: AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:N
– CWE ID: CWE-791
– CWE Name: Incomplete Filtering of Special Elements


When a share to a folder with upload rights was created it was possible
to upload files of a type which were disallowed by the firewall.


– File Firewall < 2.8.0

Action taken

Correctly detect file type also for public shares.

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