CVE-2023-28999
Last modified
CVE-2023-28999 is a medium-severity vulnerability rated 6.4/10 on the CVSS scale. 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. EPSS estimates a 0.68% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Desktop | >= 3.0.0, < 3.8.0 |
| Nextcloud | Nextcloud | >= 3.0.5, < 4.8.0 |
| Nextcloud | Nextcloud | >= 3.13.0, < 3.25.0 |
References
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfExploit, Technical Description, Third Party Advisory
- https://github.com/nextcloud/desktop/pull/5560Patch, Vendor Advisory
- https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfExploit, Technical Description, Third Party Advisory
- https://github.com/nextcloud/desktop/pull/5560Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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