{"answers":{"affected":"5 open source packages ship an affected version, including github.com/containerd/containerd. It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-41103 in the wild and no public exploit code.","fix":"Upgrade github.com/containerd/containerd to a fixed version for your release line: 1.4.11 or 1.5.7.","what":"CVE-2021-41103 is a medium-severity missing authorization vulnerability in Debian Debian Linux, published on 4 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-41103 and fix it if it is affected.\n\nWhat it is: CVE-2021-41103 is a medium-severity missing authorization vulnerability in Debian Debian Linux, published on 4 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-41103 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/containerd/containerd (Go): affected all versions; fixed in 1.4.11, 1.5.7\n- github.com/containerd/containerd (Go): affected all versions; fixed in 1.4.11\n- github.com/containerd/containerd (Go): affected all versions; fixed in 1.4.11\n- github.com/containerd/containerd (Go): affected from 1.5.0; fixed in 1.5.7\n- github.com/containerd/containerd (Go): affected from 1.5.0; fixed in 1.5.7\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-41103/ (Markdown: https://insights.sbomify.com/CVE-2021-41103/index.md)","id":"CVE-2021-41103","markdown":"https://insights.sbomify.com/CVE-2021-41103/index.md","name":"CVE-2021-41103","record":{"aliases":["AZL-6681","CLEANSTART-2025-SC08629","DEBIAN-CVE-2021-41103","DSA-5002-1","GHSA-c2h3-6mxw-7mvq","GO-2022-0938","OESA-2021-1428","UBUNTU-CVE-2021-41103","USN-5100-1","openSUSE-SU-2024:11565-1"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"container runtime","requires_auth":"none","summary":"Unprivileged host users can access and modify container files due to insufficient directory permissions in containerd.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"containerd","vendor":"linuxfoundation"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"containerd is an open source container runtime with an emphasis on simplicity, robustness and portability. A bug was found in containerd where container root directories and some plugins had insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as setuid), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files. This vulnerability has been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are released and may restart containers or update directory permissions to mitigate the vulnerability. Users unable to update should limit access to the host to trusted users. Update directory permission on container bundles directories.","ecosystems":["Go","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Insufficiently restricted permissions on plugin directories","id":"CVE-2021-41103","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora"],"type":"missing_authorization","year":"2021"},"n_packages":6,"n_references":7,"next":{"headline":"web_server allows OTA update without checking user defined basic auth username \u0026 password","id":"CVE-2021-41104"},"packages":[{"ecosystem":"Go","fixed":["1.4.11","1.5.7"],"introduced":["0","1.5.0"],"last_affected":[],"package":"github.com/containerd/containerd","purl":"pkg:golang/github.com/containerd/containerd","source":"GO-2022-0938"},{"ecosystem":"Go","fixed":["1.4.11"],"introduced":["0"],"last_affected":[],"package":"github.com/containerd/containerd","purl":null,"source":"GHSA-c2h3-6mxw-7mvq"},{"ecosystem":"Go","fixed":["1.4.11"],"introduced":["0"],"last_affected":[],"package":"github.com/containerd/containerd","purl":"pkg:golang/github.com/containerd/containerd","source":"GHSA-c2h3-6mxw-7mvq"},{"ecosystem":"Go","fixed":["1.5.7"],"introduced":["1.5.0"],"last_affected":[],"package":"github.com/containerd/containerd","purl":null,"source":"GHSA-c2h3-6mxw-7mvq"},{"ecosystem":"Go","fixed":["1.5.7"],"introduced":["1.5.0"],"last_affected":[],"package":"github.com/containerd/containerd","purl":"pkg:golang/github.com/containerd/containerd","source":"GHSA-c2h3-6mxw-7mvq"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.4.11-1.1"],"introduced":["0"],"last_affected":[],"package":"containerd","purl":"pkg:rpm/opensuse/containerd\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:11565-1"}],"prev":{"headline":"CORS `Access-Control-Allow-Origin` settings are too lenient","id":"CVE-2021-41101"},"products":["containerd"],"published":"2021-10-04","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["containerd"]},"summary":"Unprivileged host users can access and modify container files due to insufficient directory permissions in containerd.","url":"https://insights.sbomify.com/CVE-2021-41103/"}