{"answers":{"affected":"4 open source packages ship an affected version, including github.com/moby/moby. It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-21285 in the wild and no public exploit code.","fix":"Upgrade github.com/moby/moby to a fixed version for your release line: 19.3.15 or 20.10.3.","what":"CVE-2021-21285 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 2 Feb 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-21285 and fix it if it is affected.\n\nWhat it is: CVE-2021-21285 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 2 Feb 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-21285 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/moby/moby (Go): affected all versions; fixed in 19.3.15\n- github.com/moby/moby (Go): affected all versions; fixed in 19.3.15\n- github.com/moby/moby (Go): affected from 20.10.0-beta1; fixed in 20.10.3\n- github.com/moby/moby (Go): affected from 20.10.0-beta1; fixed in 20.10.3\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-2021-21285/ (Markdown: https://insights.sbomify.com/CVE-2021-21285/index.md)","id":"CVE-2021-21285","markdown":"https://insights.sbomify.com/CVE-2021-21285/index.md","name":"CVE-2021-21285","record":{"aliases":["CLEANSTART-2026-TE15990","DEBIAN-CVE-2021-21285","GHSA-6fj5-m822-rqx8","UBUNTU-CVE-2021-21285"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Docker daemon","requires_auth":"none","summary":"An attacker can crash the Docker daemon by pulling a maliciously crafted image manifest, causing a denial of service.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"docker","vendor":"docker"},{"product":"e-series_santricity_os_controller","vendor":"netapp"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-754","name":"Improper Check for Unusual or Exceptional Conditions"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.","ecosystems":["Go"],"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":"Docker daemon crash during image pull of malicious image","id":"CVE-2021-21285","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"debian:debian_linux","products":["debian:debian_linux","netapp:e-series_santricity_os_controller"],"type":"denial_of_service","year":"2021"},"n_packages":4,"n_references":8,"next":{"headline":"Authorization Bypass in AVideo Platform","id":"CVE-2021-21286"},"packages":[{"ecosystem":"Go","fixed":["19.3.15"],"introduced":["0"],"last_affected":[],"package":"github.com/moby/moby","purl":null,"source":"GHSA-6fj5-m822-rqx8"},{"ecosystem":"Go","fixed":["19.3.15"],"introduced":["0"],"last_affected":[],"package":"github.com/moby/moby","purl":"pkg:golang/github.com/moby/moby","source":"GHSA-6fj5-m822-rqx8"},{"ecosystem":"Go","fixed":["20.10.3"],"introduced":["20.10.0-beta1"],"last_affected":[],"package":"github.com/moby/moby","purl":null,"source":"GHSA-6fj5-m822-rqx8"},{"ecosystem":"Go","fixed":["20.10.3"],"introduced":["20.10.0-beta1"],"last_affected":[],"package":"github.com/moby/moby","purl":"pkg:golang/github.com/moby/moby","source":"GHSA-6fj5-m822-rqx8"}],"prev":{"headline":"privilege escalation in Moby","id":"CVE-2021-21284"},"products":["moby"],"published":"2021-02-02","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":"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":"2024-08-03","vendors":["moby"]},"summary":"An attacker can crash the Docker daemon by pulling a maliciously crafted image manifest, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2021-21285/"}