{"id":"USN-5100-1","summary":"containerd vulnerability","details":"It was discovered that containerd insufficiently restricted permissions on\ncontainer root and plugin directories. If a user or automated system were\ntricked into launching a specially crafted container image, a remote\nattacker could traverse directory contents and modify files and execute\nprograms on the host filesystem, possibly leading to privilege escalation.\n","modified":"2026-02-10T04:42:20Z","published":"2021-10-04T16:51:49Z","related":["UBUNTU-CVE-2021-41103"],"upstream":["CVE-2021-41103","UBUNTU-CVE-2021-41103"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5100-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-41103"}],"affected":[{"package":{"name":"containerd","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/containerd@1.5.2-0ubuntu1~18.04.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.2-0ubuntu1~18.04.3"}]}],"versions":["0.2.5-0ubuntu2","1.2.6-0ubuntu1~18.04.1","1.2.6-0ubuntu1~18.04.2","1.3.3-0ubuntu1~18.04.1","1.3.3-0ubuntu1~18.04.2","1.3.3-0ubuntu1~18.04.3","1.3.3-0ubuntu1~18.04.4","1.4.4-0ubuntu1~18.04.2","1.5.2-0ubuntu1~18.04.1","1.5.2-0ubuntu1~18.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.2-0ubuntu1~18.04.3","binary_name":"containerd"},{"binary_version":"1.5.2-0ubuntu1~18.04.3","binary_name":"golang-github-containerd-containerd-dev"},{"binary_version":"1.5.2-0ubuntu1~18.04.3","binary_name":"golang-github-docker-containerd-dev"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5100-1.json","cves_map":{"cves":[{"id":"CVE-2021-41103","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:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"containerd","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/containerd@1.5.2-0ubuntu1~20.04.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.2-0ubuntu1~20.04.3"}]}],"versions":["1.2.10-0ubuntu1","1.3.2-0ubuntu1","1.3.3-0ubuntu1","1.3.3-0ubuntu2","1.3.3-0ubuntu2.1","1.3.3-0ubuntu2.2","1.3.3-0ubuntu2.3","1.4.4-0ubuntu1~20.04.2","1.5.2-0ubuntu1~20.04.1","1.5.2-0ubuntu1~20.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.2-0ubuntu1~20.04.3","binary_name":"containerd"},{"binary_version":"1.5.2-0ubuntu1~20.04.3","binary_name":"golang-github-containerd-containerd-dev"},{"binary_version":"1.5.2-0ubuntu1~20.04.3","binary_name":"golang-github-docker-containerd-dev"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5100-1.json","cves_map":{"cves":[{"id":"CVE-2021-41103","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:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.3"}