CVE Vulnerabilities

CVE-2023-28997

Reusing a Nonce, Key Pair in Encryption

Published: Apr 04, 2023 | Modified: Apr 10, 2023
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can recover and modify the contents of end-to-end encrypted files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.

Weakness

Nonces should be used for the present occasion and only once.

Affected Software

Name Vendor Start Version End Version
Desktop Nextcloud 3.0.0 (including) 3.6.5 (excluding)
Nextcloud-desktop Ubuntu kinetic *
Nextcloud-desktop Ubuntu trusty *
Nextcloud-desktop Ubuntu upstream *
Nextcloud-desktop Ubuntu xenial *

Potential Mitigations

References