{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-21685 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2020-21685 is a medium-severity memory corruption vulnerability in Nasm Netwide Assembler, 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-2020-21685 and fix it if it is affected.\n\nWhat it is: CVE-2020-21685 is a medium-severity memory corruption vulnerability in Nasm Netwide Assembler, 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-2020-21685 exists.\n\nAffected product: Nasm Netwide Assembler. 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-2020-21685/ (Markdown: https://insights.sbomify.com/CVE-2020-21685/index.md)","id":"CVE-2020-21685","markdown":"https://insights.sbomify.com/CVE-2020-21685/index.md","name":"CVE-2020-21685","record":{"aliases":["DEBIAN-CVE-2020-21685","GHSA-rcf5-prwr-ph76"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"NASM assembler","requires_auth":"none","summary":"Remote attackers can cause denial of service in NASM by providing a crafted assembly file that triggers a buffer overflow.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"netwide_assembler","vendor":"nasm"}],"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":"Buffer Overflow vulnerability in hash_findi function in hashtbl.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.","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-2020-21685","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"nasm:netwide_assembler","products":["nasm:netwide_assembler"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Use after free in n/a","id":"CVE-2020-21686"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2020-21684"},"products":["n/a"],"published":"2023-08-22","related":[{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2004-1287","kev_date_added":null,"published":"2004-12-22"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2020-24978","kev_date_added":null,"published":"2020-09-03"},{"cvss_score":9.3,"headline":"Memory corruption in n/a","id":"CVE-2008-7177","kev_date_added":null,"published":"2009-09-08"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2023-31722","kev_date_added":null,"published":"2023-05-17"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2022-44370","kev_date_added":null,"published":"2023-03-29"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2022-46456","kev_date_added":null,"published":"2023-01-04"},{"cvss_score":7.8,"headline":"Use after free in n/a","id":"CVE-2019-8343","kev_date_added":null,"published":"2019-02-15"}],"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":"2024-10-07","vendors":["n/a"]},"summary":"Remote attackers can cause denial of service in NASM by providing a crafted assembly file that triggers a buffer overflow.","url":"https://insights.sbomify.com/CVE-2020-21685/"}