CVE-2023-28998
Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder.
Does this matter?
Lower severity and a low EPSS score (0.68%). Track it; it rarely justifies an emergency change on its own.
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 gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
- EPSS
- 0.68% probability · 50th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-325
- Affected
- nextcloud/desktop
- Source
- security-advisories@github.com
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/5323Patch, Vendor Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgrVendor 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/5323Patch, Vendor Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgrVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.