CVE-2023-28997CWE-323

Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to break, manipulate, access files

Medium · published April 4, 2023

CVSS v3.1
6.7
EPSS
1%
Percentile
65.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.7 · MEDIUM
Vector
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.01113 · 65.7th percentile
Weakness
CWE-323 · Reusing a Nonce, Key Pair in Encryption
Published
2023-04-04T12:42Z
EPSS history
Timeline
  • 04 APR 12:42Z
    Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to break, manipulate, access files
    cvelistv5