{"answers":{"affected":"1 open source package ship an affected version, including libredwg.","exploited":"There is no known exploitation of OSV-2021-620 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2021-620 yet. Limit exposure of the affected software until one is available.","what":"OSV-2021-620 is a vulnerability in libredwg, published on 10 Apr 2021."},"fix_prompt":"Check this codebase for OSV-2021-620 and fix it if it is affected.\n\nWhat it is: OSV-2021-620 is a vulnerability in libredwg, published on 10 Apr 2021. \nExploitation: There is no known exploitation of OSV-2021-620 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libredwg (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-2021-620/ (Markdown: https://insights.sbomify.com/OSV-2021-620/index.md)","id":"OSV-2021-620","markdown":"https://insights.sbomify.com/OSV-2021-620/index.md","name":"OSV-2021-620","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"DWG file parser","requires_auth":"none","summary":"A null pointer dereference in the DWG file parser allows attackers to cause a denial of service via crafted files.","user_interaction":"not_required","vuln_class":"null_dereference"},"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=33059\n\n```\nCrash type: Segv on unknown address\nCrash state:\ndwg_free_summaryinfo\ndwg_free\nllvmfuzz.c\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":"Segv on unknown address in dwg_free_summaryinfo","id":"OSV-2021-620","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"null_dereference","year":"2021"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"libredwg","purl":"pkg:generic/libredwg","source":"OSV-2021-620"}],"products":null,"published":"2021-04-10","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 null pointer dereference in the DWG file parser allows attackers to cause a denial of service via crafted files.","url":"https://insights.sbomify.com/OSV-2021-620/"}