{"id":"UBUNTU-CVE-2019-19921","details":"runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. (This vulnerability does not affect Docker due to an implementation detail that happens to block the attack.)","modified":"2026-01-30T01:43:00.695561Z","published":"2020-02-12T15:15:00Z","related":["USN-4297-1","USN-6088-2"],"upstream":["CVE-2019-19921"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-19921"},{"type":"REPORT","url":"https://github.com/opencontainers/runc/pull/2190"},{"type":"REPORT","url":"https://github.com/opencontainers/runc/pull/2207"},{"type":"REPORT","url":"https://gist.github.com/LiveOverflow/c937820b688922eb127fb760ce06dab9"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4297-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6088-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-19921"}],"affected":[{"package":{"name":"runc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/runc@1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4"}]}],"versions":["0.0.8+dfsg-2","0.1.1-0ubuntu5~16.04","1.0.0~rc1-0ubuntu1~16.04","1.0.0~rc1-0ubuntu2~16.04.1","1.0.0~rc1-0ubuntu2~16.04.1.1","1.0.0~rc2-0ubuntu2~16.04.1","1.0.0~rc2+docker1.12.6-0ubuntu1~16.04.1","1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.1","1.0.0~rc2+docker1.13.1-0ubuntu1~16.04.2","1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.3","1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4","1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm1","1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"golang-github-opencontainers-runc-dev","binary_version":"1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4"},{"binary_version":"1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4","binary_name":"runc"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19921.json"}},{"package":{"name":"runc","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/runc@1.0.0~rc10-0ubuntu1~18.04.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0~rc10-0ubuntu1~18.04.2"}]}],"versions":["1.0.0~rc2+docker1.13.1-0ubuntu1","1.0.0~rc4+dfsg1-2","1.0.0~rc4+dfsg1-6","1.0.0~rc4+dfsg1-6ubuntu0.18.04.1","1.0.0~rc7+git20190403.029124da-0ubuntu1~18.04.1","1.0.0~rc7+git20190403.029124da-0ubuntu1~18.04.2","1.0.0~rc10-0ubuntu1~18.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"golang-github-opencontainers-runc-dev","binary_version":"1.0.0~rc10-0ubuntu1~18.04.2"},{"binary_name":"runc","binary_version":"1.0.0~rc10-0ubuntu1~18.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19921.json"}},{"package":{"name":"runc","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/runc@1.0.0~rc10-0ubuntu1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.0~rc10-0ubuntu1"}]}],"versions":["1.0.0~rc8+git20190923.3e425f80-0ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"golang-github-opencontainers-runc-dev","binary_version":"1.0.0~rc10-0ubuntu1"},{"binary_name":"runc","binary_version":"1.0.0~rc10-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19921.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}