CVE-2021-32728
published 2021-08-18CVE-2021-32728: The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. Clients using the Nextcloud end-to-end encryption feature…
medium6.5CVSS 3.1
AVNACLPRLUINSUCHINAN
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. Clients using the Nextcloud end-to-end encryption feature download the public and private key via an API endpoint. In versions prior to 3.3.0, the Nextcloud Desktop client fails to check if a private key belongs to previously downloaded public certificate. If the Nextcloud instance serves a malicious public key, the data would be encrypted for this key and thus could be accessible to a malicious actor. This issue is fixed in Nextcloud Desktop Client version 3.3.0. There are no known workarounds aside from upgrading.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | nextcloud-desktop | < nextcloud-desktop 3.3.1-1 (bookworm) | nextcloud-desktop 3.3.1-1 (bookworm) |
| nextcloud | desktop | < 3.3.0 | 3.3.0 |
| nextcloud | security-advisories | < 3.3.0 | 3.3.0 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
osv6.5MEDIUM