{"answers":{"affected":"1 open source package ship an affected version, including arrow.","exploited":"There is no known exploitation of OSV-2020-21 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2020-21 yet. Limit exposure of the affected software until one is available.","what":"OSV-2020-21 is a memory corruption vulnerability in arrow, published on 24 Jun 2020."},"fix_prompt":"Check this codebase for OSV-2020-21 and fix it if it is affected.\n\nWhat it is: OSV-2020-21 is a memory corruption vulnerability in arrow, published on 24 Jun 2020. \nExploitation: There is no known exploitation of OSV-2020-21 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- arrow (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-2020-21/ (Markdown: https://insights.sbomify.com/OSV-2020-21/index.md)","id":"OSV-2020-21","markdown":"https://insights.sbomify.com/OSV-2020-21/index.md","name":"OSV-2020-21","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","code_execution"],"network_reachable":"unknown","non_default_config":false,"product_category":"Apache Arrow library","requires_auth":"none","summary":"A memory corruption vulnerability in Apache Arrow's Parquet decoder allows attackers to cause crashes or potentially execute code via crafted files.","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=20711\n\n```\nCrash type: UNKNOWN WRITE\nCrash state:\narrow::internal::unpack32\nint arrow::BitUtil::BitReader::GetBatch\u003cint\u003e\nparquet::DictByteArrayDecoderImpl::DecodeArrowDense\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":"UNKNOWN WRITE in arrow::internal::unpack32","id":"OSV-2020-21","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":"arrow","purl":"pkg:generic/arrow","source":"OSV-2020-21"}],"products":null,"published":"2020-06-24","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 memory corruption vulnerability in Apache Arrow's Parquet decoder allows attackers to cause crashes or potentially execute code via crafted files.","url":"https://insights.sbomify.com/OSV-2020-21/"}