{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-21047 exists.","fix":"Apply the vendor's patch.","what":"CVE-2020-21047 is a medium-severity memory corruption vulnerability in n/a, published on 22 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-21047 and fix it if it is affected.\n\nWhat it is: CVE-2020-21047 is a medium-severity memory corruption vulnerability in n/a, published on 22 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-21047 exists.\n\nAffected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2020-21047/ (Markdown: https://insights.sbomify.com/CVE-2020-21047/index.md)","id":"CVE-2020-21047","markdown":"https://insights.sbomify.com/CVE-2020-21047/index.md","name":"CVE-2020-21047","record":{"aliases":["DEBIAN-CVE-2020-21047","DLA-3579-1","GHSA-q33x-5cf5-cqqv","UBUNTU-CVE-2020-21047"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"ELF utilities library","requires_auth":"none","summary":"Attackers can cause denial of service in elfutils by crafting malicious ELF files that trigger out-of-bounds writes and assertion failures.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"elfutils","vendor":"elfutils_project"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Memory corruption in n/a","id":"CVE-2020-21047","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":3,"next":{"headline":"Denial of service in n/a","id":"CVE-2020-21048"},"packages":[],"prev":{"headline":"Privilege escalation in n/a","id":"CVE-2020-21046"},"products":["n/a"],"published":"2023-08-22","related":[{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2018-8769","kev_date_added":null,"published":"2018-03-18"},{"cvss_score":6.8,"headline":"Integer overflow in n/a","id":"CVE-2014-0172","kev_date_added":null,"published":"2014-04-11"},{"cvss_score":6.5,"headline":"Denial of service in n/a","id":"CVE-2019-7148","kev_date_added":null,"published":"2019-01-29"},{"cvss_score":6.4,"headline":"Path traversal in n/a","id":"CVE-2014-9447","kev_date_added":null,"published":"2015-01-02"},{"cvss_score":5.5,"headline":"Denial of service in n/a","id":"CVE-2021-33294","kev_date_added":null,"published":"2023-07-18"},{"cvss_score":5.5,"headline":"Integer overflow in n/a","id":"CVE-2019-7664","kev_date_added":null,"published":"2019-02-09"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["n/a"]},"summary":"Attackers can cause denial of service in elfutils by crafting malicious ELF files that trigger out-of-bounds writes and assertion failures.","url":"https://insights.sbomify.com/CVE-2020-21047/"}