Missing permission check on resharing a board (NC-SA-2020-025)
8th April 2020
Risk level: Low
CVSS v3 Base Score: 7.3 (AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H)
CWE: Improper Access Control - Generic (CWE-284)
HackerOne report: 827816
Description
Improper access control in Nextcloud Deck 0.8.0 allowed an attacker to reshare boards shared with them with more permissions than they had themselves.
Affected Software
- Nextcloud Deck < 0.8.1 (CVE-2020-8182)
Action Taken
The error has been fixed.
Resolution
It is recommended that the Nextcloud Deck is upgraded to 0.8.1.
Acknowledgements
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
This advisory is licensed CC BY-SA 4.0.