Vulnerability in Nextcloud Security-advisories
CVE-2023-28997
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…
EPSS: 0.006 (69.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N.
Affected products
- Nextcloud Security-advisories — versions >= 3.0.0, < 3.6.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc (x_refsource_CONFIRM)
- https://github.com/nextcloud/desktop/pull/5324 (x_refsource_MISC)
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf (x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-28997?
- CVE-2023-28997 is a medium-severity vulnerability in Nextcloud Security-advisories, classified under Reusing a Nonce, Key Pair in Encryption. CVSS score: 6.7/10. Published 2023-04-04.
- How severe is CVE-2023-28997?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2023-28997 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.