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.
Published 2023-04-04 13:15:09
Updated 2023-04-10 18:14:15
Source GitHub, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2023-28998

0.10%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-28998

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.1
MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
0.9
5.2
NIST
6.7
MEDIUM CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
0.4
5.8
GitHub, Inc.

CWE ids for CVE-2023-28998

  • The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.
    Assigned by: security-advisories@github.com (Primary)

References for CVE-2023-28998

Products affected by CVE-2023-28998

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