{"id":"UBUNTU-CVE-2021-29136","details":"Open Container Initiative umoci before 0.4.7 allows attackers to overwrite arbitrary host paths via a crafted image that causes symlink traversal when \"umoci unpack\" or \"umoci raw unpack\" is used.","modified":"2025-10-24T04:50:15Z","published":"2021-04-06T16:15:00Z","upstream":["CVE-2021-29136"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-29136"},{"type":"REPORT","url":"https://github.com/opencontainers/umoci/security/advisories/GHSA-9m95-8hx6-7p9v"},{"type":"REPORT","url":"https://github.com/opencontainers/umoci/commit/d9efc31daf2206f7d3fdb839863cf7a576a2eb57"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2021/04/06/2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-29136"}],"affected":[{"package":{"name":"umoci","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/umoci@0.4.5+dfsg-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4.4+dfsg-1","0.4.4+dfsg-5","0.4.5+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.4.5+dfsg-1","binary_name":"golang-github-opensuse-umoci-dev"},{"binary_version":"0.4.5+dfsg-1","binary_name":"umoci"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29136.json"}},{"package":{"name":"umoci","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/umoci@0.4.7+ds-2ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4.7+ds-2","0.4.7+ds-2build1","0.4.7+ds-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.4.7+ds-2ubuntu0.1","binary_name":"golang-github-opensuse-umoci-dev"},{"binary_version":"0.4.7+ds-2ubuntu0.1","binary_name":"umoci"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29136.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}