CVEvulnerability
CVE-2023-28997
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2023-04-04
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.7 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-323
Description
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.
Affected configurations
• nextcloud desktop (>= 3.0.0 < 3.6.5)
Related
Weakness · CWE (1)
- CWE-323 Reusing a Nonce, Key Pair in Encryption weakness
References
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf Exploit, Technical Description, Third Party Advisory
- https://github.com/nextcloud/desktop/pull/5324 Patch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc Vendor Advisory
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf Exploit, Technical Description, Third Party Advisory
- https://github.com/nextcloud/desktop/pull/5324 Patch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/09/msg00018.html lists.debian.org