{"id":"UBUNTU-CVE-2023-29000","details":"The 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.","modified":"2026-04-22T14:05:29.068753Z","published":"2023-04-04T13:15:00Z","upstream":["CVE-2023-29000"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-29000"},{"type":"REPORT","url":"https://github.com/nextcloud/desktop/pull/4949"},{"type":"REPORT","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h82x-98q3-7534"},{"type":"REPORT","url":"https://hackerone.com/reports/1679267"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-29000"}],"affected":[{"package":{"name":"nextcloud-desktop","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/nextcloud-desktop@2.6.2-1build1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.3-1","2.6.0-1","2.6.1-1","2.6.1-2","2.6.2-1","2.6.2-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"caja-nextcloud","binary_version":"2.6.2-1build1"},{"binary_name":"dolphin-nextcloud","binary_version":"2.6.2-1build1"},{"binary_name":"libnextcloudsync0","binary_version":"2.6.2-1build1"},{"binary_name":"nautilus-nextcloud","binary_version":"2.6.2-1build1"},{"binary_name":"nemo-nextcloud","binary_version":"2.6.2-1build1"},{"binary_name":"nextcloud-desktop","binary_version":"2.6.2-1build1"},{"binary_name":"nextcloud-desktop-cmd","binary_version":"2.6.2-1build1"},{"binary_name":"nextcloud-desktop-common","binary_version":"2.6.2-1build1"},{"binary_version":"2.6.2-1build1","binary_name":"nextcloud-desktop-l10n"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-29000.json"}},{"package":{"name":"nextcloud-desktop","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/nextcloud-desktop@3.4.2-1ubuntu1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.3-0ubuntu1","3.3.5-1","3.3.5-1ubuntu1","3.4.2-1","3.4.2-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.2-1ubuntu1","binary_name":"caja-nextcloud"},{"binary_name":"dolphin-nextcloud","binary_version":"3.4.2-1ubuntu1"},{"binary_name":"libnextcloudsync0","binary_version":"3.4.2-1ubuntu1"},{"binary_name":"nautilus-nextcloud","binary_version":"3.4.2-1ubuntu1"},{"binary_name":"nemo-nextcloud","binary_version":"3.4.2-1ubuntu1"},{"binary_name":"nextcloud-desktop","binary_version":"3.4.2-1ubuntu1"},{"binary_name":"nextcloud-desktop-cmd","binary_version":"3.4.2-1ubuntu1"},{"binary_name":"nextcloud-desktop-common","binary_version":"3.4.2-1ubuntu1"},{"binary_name":"nextcloud-desktop-l10n","binary_version":"3.4.2-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-29000.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}