CVE-2023-29000

NameCVE-2023-29000
DescriptionThe Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.7.0, by trusting that the server will return a certificate that belongs to the keypair of the user, a malicious server could get the desktop client to encrypt files with a key known to the attacker. This issue is fixed in Nextcloud Desktop 3.7.0. 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)

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 (security), bullseye3.1.1-2+deb11u1vulnerable
bookworm3.7.3-1+deb12u1fixed
sid, trixie3.11.0-1.1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nextcloud-desktopsource(unstable)3.7.0-1

Notes

[bullseye] - nextcloud-desktop <no-dsa> (Minor issue)
[buster] - nextcloud-desktop <no-dsa> (Minor issue)
https://github.com/nextcloud/desktop/pull/4949
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h82x-98q3-7534
https://hackerone.com/reports/1679267

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