Improper confidentiality protection of server-side encryption keys (NC-SA-2020-040)
3rd October 2020
Risk level: Low
CVSS v3 Base Score: 5.3 (AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N)
CWE: Insufficiently Protected Credentials (CWE-522)
HackerOne report: 743505
Description
Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the public key to decrypt them later on.
Affected Software
- Nextcloud Server < 20.0.0 (CVE-2020-8152)
Action Taken
The error has been fixed.
Resolution
It is recommended that the Nextcloud Server is upgraded to 20.0.0.
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.