{"answers":{"affected":"1 open source package ship an affected version, including harfbuzz.","exploited":"There is no known exploitation of OSV-2020-1606 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2020-1606 yet. Limit exposure of the affected software until one is available.","what":"OSV-2020-1606 is a memory corruption vulnerability in harfbuzz, published on 14 Aug 2020."},"fix_prompt":"Check this codebase for OSV-2020-1606 and fix it if it is affected.\n\nWhat it is: OSV-2020-1606 is a memory corruption vulnerability in harfbuzz, published on 14 Aug 2020. \nExploitation: There is no known exploitation of OSV-2020-1606 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- harfbuzz (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-2020-1606/ (Markdown: https://insights.sbomify.com/OSV-2020-1606/index.md)","id":"OSV-2020-1606","markdown":"https://insights.sbomify.com/OSV-2020-1606/index.md","name":"OSV-2020-1606","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"HarfBuzz text shaping","requires_auth":"none","summary":"An out-of-bounds read in HarfBuzz can cause a crash when processing malformed font data, potentially leading to denial of service.","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=24842\n\n```\nCrash type: UNKNOWN READ\nCrash state:\nhb_set_digest_lowest_bits_t\u003cunsigned long, 4u\u003e::may_have\nhb_set_digest_combiner_t\u003chb_set_digest_lowest_bits_t\u003cunsigned long, 4u\u003e, hb_set_\nOT::hb_ot_layout_lookup_accelerator_t::may_have\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 READ in hb_set_digest_lowest_bits_t\u003cunsigned long, 4u\u003e::may_have","id":"OSV-2020-1606","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":"harfbuzz","purl":"pkg:generic/harfbuzz","source":"OSV-2020-1606"}],"products":null,"published":"2020-08-14","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 out-of-bounds read in HarfBuzz can cause a crash when processing malformed font data, potentially leading to denial of service.","url":"https://insights.sbomify.com/OSV-2020-1606/"}