CVEvulnerability
CVE-2023-28999
6.4 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2023-04-04
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.9 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
- CVSS 3.1 ([email protected])
- 6.4 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
- Weaknesses
- CWE-311, CWE-325
Description
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.
Affected configurations
• nextcloud desktop (>= 3.0.0 < 3.8.0)
• nextcloud nextcloud (>= 3.0.5 < 4.8.0)
• nextcloud nextcloud (>= 3.13.0 < 3.25.0)
Related
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/5560 Patch, Vendor Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8 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/5560 Patch, Vendor Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8 Vendor Advisory