[Pkg-owncloud-maintainers] Bug#1034184: nextcloud-desktop: CVE-2023-28999

[Moritz Mühlenhoff]

Source: nextcloud-desktop
X-Debbugs-CC: team at security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerability was published for nextcloud-desktop.

CVE-2023-28999[0]:
| 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.

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
https://github.com/nextcloud/desktop/pull/5560

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-28999
    https://www.cve.org/CVERecord?id=CVE-2023-28999

Please adjust the affected versions in the BTS as needed.