DescriptionNextcloud 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.‚Äč 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1034184

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
nextcloud-desktop (PTS)buster, buster (security)2.5.1-3+deb10u2vulnerable
bullseye, bullseye (security)3.1.1-2+deb11u1vulnerable
sid, trixie3.11.0-1.1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - nextcloud-desktop <no-dsa> (Minor issue)
[bullseye] - nextcloud-desktop <no-dsa> (Minor issue)
[buster] - nextcloud-desktop <no-dsa> (Minor issue)

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