{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-42765 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-42765 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-42765 is a high-severity denial of service vulnerability in n/a, published on 20 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-42765 and fix it if it is affected.\n\nWhat it is: CVE-2021-42765 is a high-severity denial of service vulnerability in n/a, published on 20 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-42765 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-42765/ (Markdown: https://insights.sbomify.com/CVE-2021-42765/index.md)","id":"CVE-2021-42765","markdown":"https://insights.sbomify.com/CVE-2021-42765/index.md","name":"CVE-2021-42765","record":{"aliases":["GHSA-vvvf-733g-g5rv"],"analysis":{"component_type":"other","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Ethereum consensus protocol","requires_auth":"none","summary":"An adversary can cause indefinite stalling of consensus decisions in the Ethereum PoS protocol by leveraging network delays.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"proof-of-stake_ethereum","vendor":"proof-of-stake_ethereum_project"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an adversary to leverage network delay to cause a denial of service (indefinite stalling of consensus decisions).","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":"Denial of service in n/a","id":"CVE-2021-42765","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in n/a","id":"CVE-2021-42766"},"packages":[],"prev":{"headline":"Denial of service in n/a","id":"CVE-2021-42764"},"products":["n/a"],"published":"2021-10-20","related":[{"cvss_score":9.1,"headline":"Denial of service in n/a","id":"CVE-2021-42764","kev_date_added":null,"published":"2021-10-20"},{"cvss_score":9.1,"headline":"Denial of service in n/a","id":"CVE-2021-42766","kev_date_added":null,"published":"2021-10-20"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"An adversary can cause indefinite stalling of consensus decisions in the Ethereum PoS protocol by leveraging network delays.","url":"https://insights.sbomify.com/CVE-2021-42765/"}