Denial of Service attack (NC-SA-2017-004)
5th February 2017
Risk level: Low
CVSS v3 Base Score: 5 (AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L)
HackerOne report: 174524
Due to an error in the application logic an authenticated adversary may trigger an endless recursion in the application leading to a potential Denial of Service.
- Nextcloud Server < 10.0.2 (CVE-2017-0886)
- Nextcloud Server < 9.0.55 (CVE-2017-0886)
The code path leading to the endless recursion is now properly handled.
It is recommended that all instances are upgraded to Nextcloud 9.0.55 or 10.0.2.
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.