{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-18976 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-18976 is a medium-severity memory corruption vulnerability in Broadcom Tcpreplay, published on 25 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-18976 and fix it if it is affected.\n\nWhat it is: CVE-2020-18976 is a medium-severity memory corruption vulnerability in Broadcom Tcpreplay, published on 25 Aug 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2020-18976 in the wild and no public exploit code.\n\nAffected product: Broadcom Tcpreplay. 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-2020-18976/ (Markdown: https://insights.sbomify.com/CVE-2020-18976/index.md)","id":"CVE-2020-18976","markdown":"https://insights.sbomify.com/CVE-2020-18976/index.md","name":"CVE-2020-18976","record":{"aliases":["DEBIAN-CVE-2020-18976","GHSA-v6p2-879w-fx47","UBUNTU-CVE-2020-18976"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Network packet replay tool","requires_auth":"none","summary":"Attackers can cause a denial of service in Tcpreplay by sending a crafted pcap file to the tcpreplay-edit binary.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"tcpreplay","vendor":"broadcom"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the 'do_checksum' function in 'checksum.c'. It can be triggered by sending a crafted pcap file to the 'tcpreplay-edit' binary. This issue is different than CVE-2019-8381.","ecosystems":[],"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 n/a","id":"CVE-2020-18976","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"broadcom:tcpreplay","products":["broadcom:tcpreplay"],"type":"memory_corruption","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2020-18979"},"packages":[],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2020-18974"},"products":["n/a"],"published":"2021-08-25","related":[{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2018-18408","kev_date_added":null,"published":"2018-10-17"},{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2020-12740","kev_date_added":null,"published":"2020-05-08"},{"cvss_score":7.8,"headline":"Use after free in n/a","id":"CVE-2025-51006","kev_date_added":null,"published":"2025-09-22"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2022-37047","kev_date_added":null,"published":"2022-08-18"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2022-37048","kev_date_added":null,"published":"2022-08-18"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2022-37049","kev_date_added":null,"published":"2022-08-18"},{"cvss_score":7.8,"headline":"Use after free in n/a","id":"CVE-2022-27416","kev_date_added":null,"published":"2022-04-12"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can cause a denial of service in Tcpreplay by sending a crafted pcap file to the tcpreplay-edit binary.","url":"https://insights.sbomify.com/CVE-2020-18976/"}