{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2020-4839 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-4839 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-4839 is a medium-severity memory corruption vulnerability in IBM 8335-GCA, published on 25 May 2021. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-4839 and fix it if it is affected.\n\nWhat it is: CVE-2020-4839 is a medium-severity memory corruption vulnerability in IBM 8335-GCA, published on 25 May 2021. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-4839 in the wild and no public exploit code.\n\nAffected product: IBM 8335-GCA. 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-2020-4839/ (Markdown: https://insights.sbomify.com/CVE-2020-4839/index.md)","id":"CVE-2020-4839","markdown":"https://insights.sbomify.com/CVE-2020-4839/index.md","name":"CVE-2020-4839","record":{"aliases":["GHSA-wm8q-g9p3-9xhm"],"analysis":{"component_type":"hardware_firmware","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"IBM Host firmware","requires_auth":"high_privilege","summary":"A remote privileged attacker can cause a denial of service via a stack-based buffer overflow in IBM Host firmware for LC-class systems.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"ibm","cpe":[{"product":"8335-gca_firmware","vendor":"ibm"},{"product":"8335-gta_firmware","vendor":"ibm"},{"product":"8335-gtb_firmware","vendor":"ibm"}],"cvss":{"score":4.9,"severity":"medium","source":"cna","vector":"CVSS:3.0/PR:H/UI:N/AC:L/S:U/A:H/AV:N/I:N/C:N/RC:C/RL:O/E:U","version":"3.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"IBM Host firmware for LC-class Systems is vulnerable to a stack based buffer overflow, caused by improper bounds checking. A remote privileged attacker could exploit this vulnerability and cause a denial of service. IBM X-Force ID: 190037.","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":"Memory corruption in 8335-GCA","id":"CVE-2020-4839","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Open redirect in Security Secret Server","id":"CVE-2020-4840"},"packages":[],"prev":{"headline":"Cross-site scripting in API Connect","id":"CVE-2020-4838"},"products":["8335-GCA","8335-GTA","8335-GTB"],"published":"2021-05-25","related":[{"cvss_score":4.9,"headline":"Path traversal in 8335-GCA","id":"CVE-2021-29695","kev_date_added":null,"published":"2021-05-25"}],"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":"2024-09-16","vendors":["IBM"]},"summary":"A remote privileged attacker can cause a denial of service via a stack-based buffer overflow in IBM Host firmware for LC-class systems.","url":"https://insights.sbomify.com/CVE-2020-4839/"}