{"answers":{"affected":"1 open source package ship an affected version, including harfbuzz.","exploited":"There is no known exploitation of OSV-2020-243 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2020-243 yet. Limit exposure of the affected software until one is available.","what":"OSV-2020-243 is a memory corruption vulnerability in harfbuzz, published on 26 Jun 2020."},"fix_prompt":"Check this codebase for OSV-2020-243 and fix it if it is affected.\n\nWhat it is: OSV-2020-243 is a memory corruption vulnerability in harfbuzz, published on 26 Jun 2020. \nExploitation: There is no known exploitation of OSV-2020-243 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-2020-243/ (Markdown: https://insights.sbomify.com/OSV-2020-243/index.md)","id":"OSV-2020-243","markdown":"https://insights.sbomify.com/OSV-2020-243/index.md","name":"OSV-2020-243","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"unknown","non_default_config":false,"product_category":"HarfBuzz font library","requires_auth":"none","summary":"A heap-buffer-overflow in HarfBuzz's variable font serialization allows attackers to cause crashes or potentially execute code via malicious fonts.","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=19956\n\n```\nCrash type: Heap-buffer-overflow READ 12\nCrash state:\nOT::VarRegionList::serialize\nOT::VariationStore::serialize\nbool OT::HVARVVAR::_subset\u003cOT::HVAR\u003e\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 OT::VarRegionList::serialize","id":"OSV-2020-243","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-2020-243"}],"products":null,"published":"2020-06-26","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 HarfBuzz's variable font serialization allows attackers to cause crashes or potentially execute code via malicious fonts.","url":"https://insights.sbomify.com/OSV-2020-243/"}