{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2020-7461 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-7461 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-7461 is a high-severity memory corruption vulnerability in Freebsd Freebsd, published on 26 Mar 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-2020-7461 and fix it if it is affected.\n\nWhat it is: CVE-2020-7461 is a high-severity memory corruption vulnerability in Freebsd Freebsd, published on 26 Mar 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-2020-7461 in the wild and no public exploit code.\n\nAffected product: Freebsd Freebsd. 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-2020-7461/ (Markdown: https://insights.sbomify.com/CVE-2020-7461/index.md)","id":"CVE-2020-7461","markdown":"https://insights.sbomify.com/CVE-2020-7461/index.md","name":"CVE-2020-7461","record":{"aliases":["GHSA-x566-m9mc-f47w"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"FreeBSD OS","requires_auth":"none","summary":"A heap overflow in FreeBSD's dhclient allows remote code execution via malformed DHCP options, though limited by sandboxing.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"freebsd","cpe":[{"product":"freebsd","vendor":"freebsd"},{"product":"simatic_rf350m_firmware","vendor":"siemens"},{"product":"simatic_rf650m_firmware","vendor":"siemens"}],"cvss":{"score":7.3,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient(8) fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle be exploited to achieve remote code execution. The affected process runs with reduced privileges in a Capsicum sandbox, limiting the immediate impact of an exploit.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2021-04-14","github_poc":2,"max_poc_stars":15,"metasploit":0,"nuclei":0,"refs":[{"date":"2021-04-14T20:37:38Z","kind":"github_poc","ref":"https://github.com/knqyf263/CVE-2020-7461","stars":15,"title":"PoC for DHCP vulnerability (NAME:WRECK) in FreeBSD"},{"date":"2022-11-30T19:03:57Z","kind":"github_poc","ref":"https://github.com/0xkol/freebsd-dhclient-poc","stars":1,"title":"Reproducer PoC for FreeBSD dhclient heap-based buffer overflow vulnerability when parsing DHCP option 119 (CVE-2020-7461)"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Memory corruption in FreeBSD","id":"CVE-2020-7461","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"freebsd:freebsd","products":["freebsd:freebsd"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Use after free in FreeBSD","id":"CVE-2020-7462"},"packages":[],"prev":{"headline":"Race condition in FreeBSD","id":"CVE-2020-7460"},"products":["FreeBSD"],"published":"2021-03-26","related":[{"cvss_score":10,"headline":"Memory corruption in FreeBSD","id":"CVE-2018-17160","kev_date_added":null,"published":"2018-12-04"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2014-3954","kev_date_added":null,"published":"2014-10-27"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2006-4304","kev_date_added":null,"published":"2006-08-24"},{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2006-0226","kev_date_added":null,"published":"2006-01-19"},{"cvss_score":10,"headline":"Denial of service in n/a","id":"CVE-2004-0002","kev_date_added":null,"published":"2004-02-03"},{"cvss_score":10,"headline":"Security feature bypass in n/a","id":"CVE-2001-0969","kev_date_added":null,"published":"2002-03-09"},{"cvss_score":10,"headline":"Denial of service in n/a","id":"CVE-2001-0388","kev_date_added":null,"published":"2001-09-18"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A heap overflow in FreeBSD's dhclient allows remote code execution via malformed DHCP options, though limited by sandboxing.","url":"https://insights.sbomify.com/CVE-2020-7461/"}