{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-40647 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-40647 is a medium-severity memory corruption vulnerability in n/a, published on 9 Sep 2022. 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-2021-40647 and fix it if it is affected.\n\nWhat it is: CVE-2021-40647 is a medium-severity memory corruption vulnerability in n/a, published on 9 Sep 2022. 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: There is no known exploitation of CVE-2021-40647 in the wild and no public exploit code.\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-2021-40647/ (Markdown: https://insights.sbomify.com/CVE-2021-40647/index.md)","id":"CVE-2021-40647","markdown":"https://insights.sbomify.com/CVE-2021-40647/index.md","name":"CVE-2021-40647","record":{"aliases":["DEBIAN-CVE-2021-40647","GHSA-p3mv-74p6-4mgc","MGASA-2025-0097","UBUNTU-CVE-2021-40647"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"man2html utility","requires_auth":"none","summary":"A heap-based buffer overflow in man2html allows attackers to cause a denial of service or potentially execute arbitrary code via a crafted file.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"man2html","vendor":"man2html_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":"In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of the heap. This at least causes the program to segmentation abort if the heap size parameter isn't aligned correctly. In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.","ecosystems":[],"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":"Memory corruption in n/a","id":"CVE-2021-40647","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-40648"},"packages":[],"prev":{"headline":"SQL injection in n/a","id":"CVE-2021-40645"},"products":["n/a"],"published":"2022-09-09","related":[{"cvss_score":5.5,"headline":"Memory corruption in n/a","id":"CVE-2021-40648","kev_date_added":null,"published":"2022-09-09"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A heap-based buffer overflow in man2html allows attackers to cause a denial of service or potentially execute arbitrary code via a crafted file.","url":"https://insights.sbomify.com/CVE-2021-40647/"}