{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-45955 exists.","fix":"Apply the vendor's patch.","what":"CVE-2021-45955 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-2021-45955 and fix it if it is affected.\n\nWhat it is: CVE-2021-45955 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-45955 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-2021-45955/ (Markdown: https://insights.sbomify.com/CVE-2021-45955/index.md)","id":"CVE-2021-45955","markdown":"https://insights.sbomify.com/CVE-2021-45955/index.md","name":"CVE-2021-45955","record":{"aliases":["AZL-8962","GHSA-p5g5-mjp3-mr9m"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DNS/DHCP server","requires_auth":"none","summary":"Heap-based buffer overflow in Dnsmasq allows attackers to execute arbitrary code or cause denial of service via crafted packets.","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 resize_packet (called from FuzzResizePacket and fuzz_rfc1035.c) because of the lack of a proper bounds check upon pseudo header re-insertion. 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.\" However, a contributor states that a security patch (mentioned in 016162.html) is needed","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-2021-45955","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":"Memory corruption in n/a","id":"CVE-2021-45956"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-45954"},"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-2021-45956","kev_date_added":null,"published":"2021-12-31"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2021-45957","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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Heap-based buffer overflow in Dnsmasq allows attackers to execute arbitrary code or cause denial of service via crafted packets.","url":"https://insights.sbomify.com/CVE-2021-45955/"}