CVE-2023-28998CWE-325

Nextcloud Desktop client misbehaves with E2EE when the server returns empty list of metadata keys

Medium · published April 4, 2023

CVSS v3.1
6.7
EPSS
1%
Percentile
51.8
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 gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new 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
0.00679 · 51.8th percentile
Weakness
CWE-325 · Missing Cryptographic Step
Published
2023-04-04T12:45Z
EPSS history
Timeline
  • 04 APR 12:45Z
    Nextcloud Desktop client misbehaves with E2EE when the server returns empty list of metadata keys
    cvelistv5