{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-45957 in the wild and no public exploit code.","fix":"No fix published yet.","what":"CVE-2021-45957 is a critical memory corruption vulnerability in n/a, published on 31 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-45957 and fix it if it is affected.\n\nWhat it is: CVE-2021-45957 is a critical memory corruption vulnerability in n/a, published on 31 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-45957 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-2021-45957/ (Markdown: https://insights.sbomify.com/CVE-2021-45957/index.md)","id":"CVE-2021-45957","markdown":"https://insights.sbomify.com/CVE-2021-45957/index.md","name":"CVE-2021-45957","record":{"aliases":["AZL-8964","GHSA-jpgp-wjp4-f47j"],"analysis":{"component_type":"server_software","fix_type":"no_fix_stated","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS/DHCP server","requires_auth":"none","summary":"A heap-based buffer overflow in Dnsmasq's answer_request function could allow attackers to cause denial of service or execute arbitrary code.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"dnsmasq","vendor":"thekelleys"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"Dnsmasq 2.86 has a heap-based buffer overflow in answer_request (called from FuzzAnswerTheRequest and fuzz_rfc1035.c). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 \"do not represent real vulnerabilities, to the best of our knowledge.","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-2021-45957","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"UltraJSON vulnerable to Out-of-bounds Write","id":"CVE-2021-45958"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-45956"},"products":["n/a"],"published":"2021-12-31","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-45951","kev_date_added":null,"published":"2021-12-31"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-45952","kev_date_added":null,"published":"2021-12-31"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-45953","kev_date_added":null,"published":"2021-12-31"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-45954","kev_date_added":null,"published":"2021-12-31"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-45955","kev_date_added":null,"published":"2021-12-31"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-45956","kev_date_added":null,"published":"2021-12-31"}],"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 Dnsmasq's answer_request function could allow attackers to cause denial of service or execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2021-45957/"}