{"id":"USN-5252-2","summary":"policykit-1 vulnerability","details":"USN-5252-1 fixed a vulnerability in policykit-1. This update provides\nthe corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that the PolicyKit pkexec tool incorrectly handled\n command-line arguments. A local attacker could use this issue to escalate\n privileges to an administrator.\n","modified":"2026-04-22T10:20:35.655526Z","published":"2022-01-25T19:30:35Z","related":["UBUNTU-CVE-2021-4034"],"upstream":["CVE-2021-4034","UBUNTU-CVE-2021-4034"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5252-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4034"}],"affected":[{"package":{"name":"policykit-1","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/policykit-1@0.105-4ubuntu3.14.04.6+esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.105-4ubuntu3.14.04.6+esm1"}]}],"versions":["0.105-3ubuntu3","0.105-4ubuntu1","0.105-4ubuntu2","0.105-4ubuntu2.14.04.1","0.105-4ubuntu3.14.04.1","0.105-4ubuntu3.14.04.2","0.105-4ubuntu3.14.04.5","0.105-4ubuntu3.14.04.6"],"ecosystem_specific":{"binaries":[{"binary_version":"0.105-4ubuntu3.14.04.6+esm1","binary_name":"gir1.2-polkit-1.0"},{"binary_version":"0.105-4ubuntu3.14.04.6+esm1","binary_name":"libpolkit-agent-1-0"},{"binary_version":"0.105-4ubuntu3.14.04.6+esm1","binary_name":"libpolkit-backend-1-0"},{"binary_version":"0.105-4ubuntu3.14.04.6+esm1","binary_name":"libpolkit-gobject-1-0"},{"binary_version":"0.105-4ubuntu3.14.04.6+esm1","binary_name":"policykit-1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2021-4034","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:14.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5252-2.json"}},{"package":{"name":"policykit-1","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/policykit-1@0.105-14.1ubuntu0.5+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.105-14.1ubuntu0.5+esm1"}]}],"versions":["0.105-11ubuntu2","0.105-13","0.105-13ubuntu1","0.105-14","0.105-14.1","0.105-14.1ubuntu0.1","0.105-14.1ubuntu0.4","0.105-14.1ubuntu0.5"],"ecosystem_specific":{"binaries":[{"binary_version":"0.105-14.1ubuntu0.5+esm1","binary_name":"gir1.2-polkit-1.0"},{"binary_version":"0.105-14.1ubuntu0.5+esm1","binary_name":"libpolkit-agent-1-0"},{"binary_version":"0.105-14.1ubuntu0.5+esm1","binary_name":"libpolkit-backend-1-0"},{"binary_version":"0.105-14.1ubuntu0.5+esm1","binary_name":"libpolkit-gobject-1-0"},{"binary_version":"0.105-14.1ubuntu0.5+esm1","binary_name":"policykit-1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2021-4034","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5252-2.json"}}],"schema_version":"1.7.5"}