WebDAV Api Authentication Bypass using Pre-Signed URLs

Nov 21, 2023

  • Risk: high
  • CVSS v3 Base Score: 9.8
  • CVSS v3 Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CWE ID: CWE-665
  • CWE Name: Improper Initialization

Description

It is possible to access, modify or delete any file without authentication if the username of the victim
is known and the victim has no signing-key configured (which is the default).

Affected

  • core 10.6.0 – 10.13.0

Action taken

Deny the use of pre-signed urls if no signing-key is configured for the owner of the files.