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.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-4974-1 nextcloud-desktop security update
EUVD EUVD EUVD-2021-19510 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-03T23:33:54.918Z

Reserved: 2021-05-12T00:00:00

Link: CVE-2021-32728

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-18T16:15:07.293

Modified: 2024-11-21T06:07:36.810

Link: CVE-2021-32728

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.