{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-28211 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-28211 is a medium-severity memory corruption vulnerability in TianoCore EDK II, published on 11 Jun 2021. 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-2021-28211 and fix it if it is affected.\n\nWhat it is: CVE-2021-28211 is a medium-severity memory corruption vulnerability in TianoCore EDK II, published on 11 Jun 2021. 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-2021-28211 in the wild and no public exploit code.\n\nAffected product: TianoCore EDK II. 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-2021-28211/ (Markdown: https://insights.sbomify.com/CVE-2021-28211/index.md)","id":"CVE-2021-28211","markdown":"https://insights.sbomify.com/CVE-2021-28211/index.md","name":"CVE-2021-28211","record":{"aliases":["DEBIAN-CVE-2021-28211","GHSA-9f7r-6p3j-j5wj","OESA-2021-1338","RHSA-2021:2591","RLSA-2021:2591","UBUNTU-CVE-2021-28211"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"EDK II firmware","requires_auth":"high_privilege","summary":"A heap overflow in EDK II allows attackers to execute arbitrary code or escalate privileges during firmware decompression.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"TianoCore","cpe":[{"product":"edk2","vendor":"tianocore"}],"cvss":{"score":6.7,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"A heap overflow in LzmaUefiDecompressGetInfo function in EDK II.","ecosystems":["Red Hat:enterprise_linux:8::appstream","Rocky Linux:8"],"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 EDK II","id":"CVE-2021-28211","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":4,"n_references":1,"next":{"headline":"Hardcoded credentials in EDK II","id":"CVE-2021-28213"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:20200602gitca407c7246bf-4.el8_4.1"],"introduced":["0"],"last_affected":[],"package":"edk2","purl":"pkg:rpm/redhat/edk2","source":"RHSA-2021:2591"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:20200602gitca407c7246bf-4.el8_4.1"],"introduced":["0"],"last_affected":[],"package":"edk2-aarch64","purl":"pkg:rpm/redhat/edk2-aarch64","source":"RHSA-2021:2591"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:20200602gitca407c7246bf-4.el8_4.1"],"introduced":["0"],"last_affected":[],"package":"edk2-ovmf","purl":"pkg:rpm/redhat/edk2-ovmf","source":"RHSA-2021:2591"},{"ecosystem":"Rocky Linux:8","fixed":["0:20200602gitca407c7246bf-4.el8_4.1"],"introduced":["0"],"last_affected":[],"package":"edk2","purl":"pkg:rpm/rocky-linux/edk2?distro=rocky-linux-8-4-x86-64-legacy\u0026epoch=0","source":"RLSA-2021:2591"}],"prev":{"headline":"Denial of service in EDK II","id":"CVE-2021-28210"},"products":["EDK II"],"published":"2021-06-11","related":[{"cvss_score":8.3,"headline":"Buffer Overflow in EDK II Network Package","id":"CVE-2023-45230","kev_date_added":null,"published":"2024-01-16"},{"cvss_score":8.3,"headline":"Buffer Overflow in EDK II Network Package","id":"CVE-2023-45234","kev_date_added":null,"published":"2024-01-16"},{"cvss_score":8.3,"headline":"Buffer Overflow in EDK II Network Package","id":"CVE-2023-45235","kev_date_added":null,"published":"2024-01-16"},{"cvss_score":7.8,"headline":"Denial of service in EDK II","id":"CVE-2021-28210","kev_date_added":null,"published":"2021-06-11"},{"cvss_score":7.8,"headline":"Null dereference in Tianocore EDK2","id":"CVE-2019-14584","kev_date_added":null,"published":"2021-06-03"},{"cvss_score":7.8,"headline":"Privilege escalation in Tianocore","id":"CVE-2017-5731","kev_date_added":null,"published":"2019-10-28"},{"cvss_score":7.5,"headline":"Infinite loop in EDK II Network Package","id":"CVE-2023-45232","kev_date_added":null,"published":"2024-01-16"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"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":"2024-08-03","vendors":["TianoCore"]},"summary":"A heap overflow in EDK II allows attackers to execute arbitrary code or escalate privileges during firmware decompression.","url":"https://insights.sbomify.com/CVE-2021-28211/"}