{"answers":{"affected":"1 open source package ship an affected version, including wolfssl.","exploited":"There is no known exploitation of OSV-2022-840 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2022-840 yet. Limit exposure of the affected software until one is available.","what":"OSV-2022-840 is a vulnerability in wolfssl, published on 5 Sep 2022."},"fix_prompt":"Check this codebase for OSV-2022-840 and fix it if it is affected.\n\nWhat it is: OSV-2022-840 is a vulnerability in wolfssl, published on 5 Sep 2022. \nExploitation: There is no known exploitation of OSV-2022-840 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wolfssl (OSS-Fuzz): affected all versions; 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/OSV-2022-840/ (Markdown: https://insights.sbomify.com/OSV-2022-840/index.md)","id":"OSV-2022-840","markdown":"https://insights.sbomify.com/OSV-2022-840/index.md","name":"OSV-2022-840","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"WolfSSL cryptographic library","requires_auth":"none","summary":"A negative size parameter in the SHA3 finalization function can cause a crash, leading to denial of service in applications using the library.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50953\n\n```\nCrash type: Negative-size-param\nCrash state:\nwc_Sha3_256_Final\nwc_Hash\nwc_RsaPad_ex\n```","ecosystems":["OSS-Fuzz"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Negative-size-param in wc_Sha3_256_Final","id":"OSV-2022-840","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"integer_overflow","year":"2022"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"wolfssl","purl":"pkg:generic/wolfssl","source":"OSV-2022-840"}],"products":null,"published":"2022-09-05","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"OSS-Fuzz","prefix":"OSV"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"A negative size parameter in the SHA3 finalization function can cause a crash, leading to denial of service in applications using the library.","url":"https://insights.sbomify.com/OSV-2022-840/"}