Vulnerability Details : CVE-2023-28999

Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, 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.? This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.
Published 2023-04-04 13:15:09
Updated 2023-04-10 18:16:36
Source GitHub, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2023-28999

Probability of exploitation activity in the next 30 days: 0.13%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 47 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2023-28999

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
6.4
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
0.9
5.5
 NIST
6.9
 MEDIUM CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
0.4
6.0
 GitHub, Inc.

CWE ids for CVE-2023-28999

  • The product does not encrypt sensitive or critical information before storage or transmission.
    Assigned by: nvd@nist.gov (Primary)
  • 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 (Secondary)

References for CVE-2023-28999

Products affected by CVE-2023-28999

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