{"answers":{"affected":"It affects 38 products.","exploited":"There is no known exploitation of CVE-2020-8336 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-8336 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-8336 is a medium-severity vulnerability in Lenovo BIOS, published on 9 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-8336 and fix it if it is affected.\n\nWhat it is: CVE-2020-8336 is a medium-severity vulnerability in Lenovo BIOS, published on 9 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-8336 in the wild and no public exploit code.\n\nAffected product: Lenovo BIOS. 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-2020-8336/ (Markdown: https://insights.sbomify.com/CVE-2020-8336/index.md)","id":"CVE-2020-8336","markdown":"https://insights.sbomify.com/CVE-2020-8336/index.md","name":"CVE-2020-8336","record":{"aliases":["GHSA-rmxg-p4v2-9f92"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Lenovo ThinkPad BIOS","requires_auth":"none","summary":"Attackers can bypass Intel CSME anti-rollback protections on Lenovo ThinkPads, potentially allowing the installation of vulnerable firmware versions.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"lenovo","cpe":[{"product":"thinkpad_e14_firmware","vendor":"lenovo"},{"product":"thinkpad_e15_firmware","vendor":"lenovo"},{"product":"thinkpad_e490_firmware","vendor":"lenovo"},{"product":"thinkpad_e490s_firmware","vendor":"lenovo"},{"product":"thinkpad_e590_firmware","vendor":"lenovo"},{"product":"thinkpad_l13_1st_gen_firmware","vendor":"lenovo"},{"product":"thinkpad_l1415_gen_1_firmware","vendor":"lenovo"},{"product":"thinkpad_l390_yoga_firmware","vendor":"lenovo"},{"product":"thinkpad_l490_firmware","vendor":"lenovo"},{"product":"thinkpad_l590_firmware","vendor":"lenovo"},{"product":"thinkpad_p1_\\(20mx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_p1_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_p43s_\\(20rx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_p52_\\(20mx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_p53_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_p53s_\\(20nx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_p72_\\(20mx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_p73_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_r14_firmware","vendor":"lenovo"},{"product":"thinkpad_r490_firmware","vendor":"lenovo"},{"product":"thinkpad_r590_firmware","vendor":"lenovo"},{"product":"thinkpad_s2_yoga_4th_gen_firmware","vendor":"lenovo"},{"product":"thinkpad_s3_firmware","vendor":"lenovo"},{"product":"thinkpad_s3_gen_2_firmware","vendor":"lenovo"},{"product":"thinkpad_t490_\\(20nx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_t490_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_t490_\\(20rx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_t490s_\\(20nx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_t590_\\(20nx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x1_carbon_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x1_carbon_\\(20rx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x1_extreme_\\(20mx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x1_extreme_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x1_yoga_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x1_yoga_\\(20sx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x390_\\(20qx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x390_\\(20sx\\)_firmware","vendor":"lenovo"},{"product":"thinkpad_x390_yoga_firmware","vendor":"lenovo"}],"cvss":{"score":6.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Security feature bypass in BIOS","id":"CVE-2020-8336","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Other in Synaptics Smart Audio UWP App","id":"CVE-2020-8337"},"packages":[],"prev":{"headline":"Security feature bypass in ThinkPad A285 BIOS","id":"CVE-2020-8335"},"products":["BIOS"],"published":"2020-06-09","related":[{"cvss_score":6.7,"headline":"Other in ThinkPad BIOS","id":"CVE-2022-48189","kev_date_added":null,"published":"2023-10-30"},{"cvss_score":6.4,"headline":"Memory corruption in ThinkPad","id":"CVE-2023-2290","kev_date_added":null,"published":"2023-06-26"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["Lenovo"]},"summary":"Attackers can bypass Intel CSME anti-rollback protections on Lenovo ThinkPads, potentially allowing the installation of vulnerable firmware versions.","url":"https://insights.sbomify.com/CVE-2020-8336/"}