{"answers":{"affected":"1 open source package ship an affected version, including zstd.","exploited":"There is no known exploitation of OSV-2020-429 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2020-429 yet. Limit exposure of the affected software until one is available.","what":"OSV-2020-429 is a memory corruption vulnerability in zstd, published on 1 Jul 2020."},"fix_prompt":"Check this codebase for OSV-2020-429 and fix it if it is affected.\n\nWhat it is: OSV-2020-429 is a memory corruption vulnerability in zstd, published on 1 Jul 2020. \nExploitation: There is no known exploitation of OSV-2020-429 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zstd (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-2020-429/ (Markdown: https://insights.sbomify.com/OSV-2020-429/index.md)","id":"OSV-2020-429","markdown":"https://insights.sbomify.com/OSV-2020-429/index.md","name":"OSV-2020-429","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"unknown","non_default_config":false,"product_category":"Zstandard compression library","requires_auth":"none","summary":"A heap-buffer-overflow in the Zstandard library allows attackers to cause crashes or potentially execute code via crafted compressed data.","user_interaction":"not_required","vuln_class":"memory_corruption"},"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=14368\n\n```\nCrash type: Heap-buffer-overflow READ 4\nCrash state:\nMEM_read32\nZSTDv05_decodeSequence\nZSTDv05_decompressSequences\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":"Heap-buffer-overflow in MEM_read32","id":"OSV-2020-429","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"zstd","purl":"pkg:generic/zstd","source":"OSV-2020-429"}],"products":null,"published":"2020-07-01","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 heap-buffer-overflow in the Zstandard library allows attackers to cause crashes or potentially execute code via crafted compressed data.","url":"https://insights.sbomify.com/OSV-2020-429/"}