{"answers":{"affected":"2 open source packages ship an affected version, including github.com/ethereum/go-ethereum. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-43668 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-43668 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-43668 is a medium-severity vulnerability in n/a, published on 18 Nov 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-2021-43668 and fix it if it is affected.\n\nWhat it is: CVE-2021-43668 is a medium-severity vulnerability in n/a, published on 18 Nov 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-2021-43668 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/ethereum/go-ethereum (Go): affected all versions up to 1.10.9; no fix listed\n- github.com/ethereum/go-ethereum (Go): affected all versions up to 1.10.9; no fix listed\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-2021-43668/ (Markdown: https://insights.sbomify.com/CVE-2021-43668/index.md)","id":"CVE-2021-43668","markdown":"https://insights.sbomify.com/CVE-2021-43668/index.md","name":"CVE-2021-43668","record":{"aliases":["GHSA-5m8f-chrv-7rw5","UBUNTU-CVE-2021-43668"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Ethereum client","requires_auth":"low_privilege","summary":"Remote attackers can crash Go-Ethereum nodes via crafted messages, causing a denial of service due to a null pointer dereference.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"go_ethereum","vendor":"ethereum"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Denial of Service in Go-Ethereum","id":"CVE-2021-43668","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"null_dereference","year":"2021"},"n_packages":2,"n_references":1,"next":{"headline":"HTTP Request Smuggling in github.com/hyperledger/fabric","id":"CVE-2021-43669"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.10.9"],"package":"github.com/ethereum/go-ethereum","purl":null,"source":"GHSA-5m8f-chrv-7rw5"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.10.9"],"package":"github.com/ethereum/go-ethereum","purl":"pkg:golang/github.com/ethereum/go-ethereum","source":"GHSA-5m8f-chrv-7rw5"}],"prev":{"headline":"NULL Pointer Dereference in HyperLedger Fabric","id":"CVE-2021-43667"},"products":["n/a"],"published":"2021-11-18","related":[{"cvss_score":8.7,"headline":"Go Ethereum affected by DoS via malicious p2p message","id":"CVE-2026-26314","kev_date_added":null,"published":"2026-02-19"},{"cvss_score":7.5,"headline":"go-ethereum vulnerable to denial of service via crafted GraphQL query","id":"CVE-2023-42319","kev_date_added":null,"published":"2023-10-18"},{"cvss_score":7.5,"headline":"Denial of service via malicious p2p message in go-ethereum","id":"CVE-2023-40591","kev_date_added":null,"published":"2023-09-06"},{"cvss_score":7.5,"headline":"Denial of service in go-ethereum","id":"CVE-2021-42219","kev_date_added":null,"published":"2022-03-16"},{"cvss_score":7.5,"headline":"Denial of Service in Go-Ethereum","id":"CVE-2022-23327","kev_date_added":null,"published":"2022-03-04"},{"cvss_score":7.5,"headline":"Denial of Service in Go-Ethereum","id":"CVE-2022-23328","kev_date_added":null,"published":"2022-03-04"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2018-20421","kev_date_added":null,"published":"2018-12-24"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"Remote attackers can crash Go-Ethereum nodes via crafted messages, causing a denial of service due to a null pointer dereference.","url":"https://insights.sbomify.com/CVE-2021-43668/"}