{"id":"UBUNTU-CVE-2017-18188","details":"OpenRC opentmpfiles through 0.1.3, when the fs.protected_hardlinks sysctl is turned off, allows local users to obtain ownership of arbitrary files by creating a hard link inside a directory on which \"chown -R\" will be run.","modified":"2025-10-24T04:46:39Z","published":"2018-02-14T20:29:00Z","upstream":["CVE-2017-18188"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-18188"},{"type":"REPORT","url":"https://github.com/OpenRC/opentmpfiles/issues/3"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-18188"}],"affected":[{"package":{"name":"opentmpfiles","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/opentmpfiles@0.2+2019.05.21.git.44a55796ba-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2+2019.05.21.git.44a55796ba-2"],"ecosystem_specific":{"binaries":[{"binary_name":"opentmpfiles","binary_version":"0.2+2019.05.21.git.44a55796ba-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-18188.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}