{"id":"USN-6088-2","summary":"runc vulnerabilities","details":"USN-6088-1 fixed vulnerabilities in runC. This update provides\nthe corresponding updates for Ubuntu 16.04 LTS.\n\nIt was discovered that runC incorrectly performed access control when\nmounting /proc to non-directories. An attacker could possibly use\nthis issue to escalate privileges.\n(CVE-2019-19921)\n\nFelix Wilhelm discovered that runC incorrecly handled netlink \nmessages. An attacker could possibly use\nthis issue to escalate privileges. (CVE-2021-43784)\n\nAndrew G. Morgan discovered that runC incorrectly set\ninherited process capabilities inside the container.\nAn attacker could possibly use this issue to\nescalate privileges. (CVE-2022-29162)\n\nOriginal advisory details:\n\n It was discovered that runC incorrectly made /sys/fs/cgroup\n writable when in rootless mode. An attacker could possibly\n use this issue to escalate privileges. (CVE-2023-25809)\n \n It was discovered that runC incorrectly performed access control when\n mounting /proc to non-directories. An attacker could possibly use\n this issue to escalate privileges. (CVE-2023-27561)\n \n It was discovered that runC incorrectly handled /proc and \n /sys mounts inside a container. An attacker could possibly\n use this issue to bypass AppArmor, and potentially SELinux.\n (CVE-2023-28642)\n","modified":"2026-02-10T04:43:08Z","published":"2023-05-23T14:07:29Z","related":["UBUNTU-CVE-2019-19921","UBUNTU-CVE-2021-43784","UBUNTU-CVE-2022-29162","UBUNTU-CVE-2023-25809","UBUNTU-CVE-2023-27561","UBUNTU-CVE-2023-28642"],"upstream":["CVE-2019-19921","CVE-2021-43784","CVE-2022-29162","CVE-2023-25809","CVE-2023-27561","CVE-2023-28642","UBUNTU-CVE-2019-19921","UBUNTU-CVE-2021-43784","UBUNTU-CVE-2022-29162","UBUNTU-CVE-2023-25809","UBUNTU-CVE-2023-27561","UBUNTU-CVE-2023-28642"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6088-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-19921"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-43784"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-29162"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-25809"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-27561"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-28642"}],"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":{"binaries":[{"binary_name":"golang-github-opencontainers-runc-dev","binary_version":"1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4"},{"binary_name":"runc","binary_version":"1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6088-2.json","cves_map":{"cves":[{"id":"CVE-2019-19921","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-43784","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2022-29162","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:N/UI:N/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2023-25809","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2023-27561","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2023-28642","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:N/UI:R/S:C/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"}}}],"schema_version":"1.7.3"}