{"answers":{"affected":"1 open source package ship an affected version, including libredwg.","exploited":"There is no known exploitation of OSV-2021-577 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2021-577 yet. Limit exposure of the affected software until one is available.","what":"OSV-2021-577 is a vulnerability in libredwg, published on 29 Mar 2021."},"fix_prompt":"Check this codebase for OSV-2021-577 and fix it if it is affected.\n\nWhat it is: OSV-2021-577 is a vulnerability in libredwg, published on 29 Mar 2021. \nExploitation: There is no known exploitation of OSV-2021-577 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-2021-577/ (Markdown: https://insights.sbomify.com/OSV-2021-577/index.md)","id":"OSV-2021-577","markdown":"https://insights.sbomify.com/OSV-2021-577/index.md","name":"OSV-2021-577","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"DWG parsing library","requires_auth":"none","summary":"A null pointer dereference in the DWG parsing library 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=32604\n\n```\nCrash type: Segv on unknown address\nCrash state:\ndwg_free_MTEXTATTRIBUTEOBJECTCONTEXTDATA_private\ndwg_free_MTEXTATTRIBUTEOBJECTCONTEXTDATA\ndwg_free_variable_no_class\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_MTEXTATTRIBUTEOBJECTCONTEXTDATA_private","id":"OSV-2021-577","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-2021-577"}],"products":null,"published":"2021-03-29","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 parsing library allows attackers to cause a denial of service via crafted files.","url":"https://insights.sbomify.com/OSV-2021-577/"}