{"answers":{"affected":"1 open source package ship an affected version, including nanopb.","exploited":"There is no known exploitation of OSV-2020-1564 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2020-1564 yet. Limit exposure of the affected software until one is available.","what":"OSV-2020-1564 is a vulnerability in nanopb, published on 2 Aug 2020."},"fix_prompt":"Check this codebase for OSV-2020-1564 and fix it if it is affected.\n\nWhat it is: OSV-2020-1564 is a vulnerability in nanopb, published on 2 Aug 2020. \nExploitation: There is no known exploitation of OSV-2020-1564 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nanopb (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-2020-1564/ (Markdown: https://insights.sbomify.com/OSV-2020-1564/index.md)","id":"OSV-2020-1564","markdown":"https://insights.sbomify.com/OSV-2020-1564/index.md","name":"OSV-2020-1564","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"nanopb library","requires_auth":"none","summary":"An attacker can cause a denial of service in the nanopb library by triggering a use-of-uninitialized-value error during varint encoding.","user_interaction":"not_required","vuln_class":"other"},"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=24582\n\n```\nCrash type: Use-of-uninitialized-value\nCrash state:\npb_encode_varint\npb_enc_varint\nencode_array\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":"Use-of-uninitialized-value in pb_encode_varint","id":"OSV-2020-1564","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"other","year":"2020"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"nanopb","purl":"pkg:generic/nanopb","source":"OSV-2020-1564"}],"products":null,"published":"2020-08-02","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":"An attacker can cause a denial of service in the nanopb library by triggering a use-of-uninitialized-value error during varint encoding.","url":"https://insights.sbomify.com/OSV-2020-1564/"}