{"id":"UBUNTU-CVE-2020-16125","details":"gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can't contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.","modified":"2026-04-22T14:07:39.873301Z","published":"2020-11-03T00:00:00Z","related":["USN-4614-1"],"upstream":["CVE-2020-16125"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-16125"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4614-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-16125"}],"affected":[{"package":{"name":"gdm3","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/gdm3@3.18.3-0ubuntu2.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.18.0-2ubuntu1","3.18.0-2ubuntu2","3.18.0-2ubuntu3","3.18.0-2ubuntu4","3.18.2-1ubuntu1","3.18.2-1ubuntu2","3.18.3-0ubuntu1","3.18.3-0ubuntu2","3.18.3-0ubuntu2.1","3.18.3-0ubuntu2.2"],"ecosystem_specific":{"binaries":[{"binary_name":"gdm","binary_version":"3.18.3-0ubuntu2.2"},{"binary_name":"gdm3","binary_version":"3.18.3-0ubuntu2.2"},{"binary_name":"gir1.2-gdm-1.0","binary_version":"3.18.3-0ubuntu2.2"},{"binary_name":"libgdm1","binary_version":"3.18.3-0ubuntu2.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16125.json"}},{"package":{"name":"gdm3","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gdm3@3.28.3-0ubuntu18.04.6?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.28.3-0ubuntu18.04.6"}]}],"versions":["3.26.1-3ubuntu2","3.26.1-3ubuntu3","3.26.2.1-0ubuntu1","3.26.2.1-2ubuntu1","3.26.2.1-2ubuntu2","3.27.90-0ubuntu1","3.27.92-0ubuntu1","3.28.0-0ubuntu1","3.28.2-0ubuntu1.2","3.28.2-0ubuntu1.3","3.28.2-0ubuntu1.4","3.28.3-0ubuntu18.04.1","3.28.3-0ubuntu18.04.3","3.28.3-0ubuntu18.04.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gdm3","binary_version":"3.28.3-0ubuntu18.04.6"},{"binary_name":"gir1.2-gdm-1.0","binary_version":"3.28.3-0ubuntu18.04.6"},{"binary_name":"libgdm1","binary_version":"3.28.3-0ubuntu18.04.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16125.json"}},{"package":{"name":"gdm3","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gdm3@3.36.3-0ubuntu0.20.04.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.36.3-0ubuntu0.20.04.2"}]}],"versions":["3.34.1-1ubuntu1","3.36.3-0ubuntu0.20.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gdm3","binary_version":"3.36.3-0ubuntu0.20.04.2"},{"binary_name":"gir1.2-gdm-1.0","binary_version":"3.36.3-0ubuntu0.20.04.2"},{"binary_name":"libgdm1","binary_version":"3.36.3-0ubuntu0.20.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16125.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}