{"id":"CVE-2017-18188","aliases":["EUVD-2017-9323","GHSA-v99h-q3gx-w24x","UBUNTU-CVE-2017-18188"],"status":"published","title":"OpenRC opentmpfiles through 0.1.3, when the fs.protected_hardlinks sysctl is turned off, allows...","description":"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.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00403,"percentile":0.34812,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-59"],"published":"2018-02-14T20:00:00Z","modified":"2026-10-20T10:48:17Z","affected":[{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"opentmpfiles","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.2+2019.05.21.git.44a55796ba-2"]}],"products":[{"vendor":"openr","product":"opentmpfiles"}],"references":[{"url":"https://github.com/OpenRC/opentmpfiles/issues/3","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18188"},{"url":"https://github.com/advisories/GHSA-v99h-q3gx-w24x"},{"url":"https://ubuntu.com/security/CVE-2017-18188","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-18188","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-18188","description":"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.","status":"published","published":"2018-02-14T20:00:00Z","modified":"2024-09-16T18:54:13.455Z","updated_at":"2026-11-02T14:33:22.064284Z"}],"euvd":[{"id":"EUVD-2017-9323","description":"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.","status":"published","published":"2018-02-14T20:00:00Z","modified":"2024-09-16T18:54:13Z","updated_at":"2026-11-03T00:55:28.088118Z"}],"ghsa":[{"id":"GHSA-v99h-q3gx-w24x","title":"OpenRC opentmpfiles through 0.1.3, when the fs.protected_hardlinks sysctl is turned off, allows...","description":"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.","status":"published","published":"2022-05-14T03:39:20Z","modified":"2023-02-02T05:09:54Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:52:46.436433Z"}],"nvd":[{"id":"CVE-2017-18188","description":"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.","status":"published","published":"2018-02-14T20:29:00.22Z","modified":"2026-06-17T01:12:21.363Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:04:15.877386Z"}],"osv":[{"id":"CVE-2017-18188","description":"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.","status":"published","published":"2018-02-14T20:29:00.22Z","modified":"2026-10-20T10:48:17.024314319Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:05.486486Z"},{"id":"UBUNTU-CVE-2017-18188","description":"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.","status":"published","published":"2018-02-14T20:29:00Z","modified":"2025-10-24T04:46:39Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:14.977781Z"}]}}