{"answers":{"affected":"1 open source package ship an affected version, including libssh.","exploited":"There is no known exploitation of OSV-2021-892 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2021-892 yet. Limit exposure of the affected software until one is available.","what":"OSV-2021-892 is a memory corruption vulnerability in libssh, published on 24 Jun 2021. It can be exploited over the network, with no action from the victim."},"fix_prompt":"Check this codebase for OSV-2021-892 and fix it if it is affected.\n\nWhat it is: OSV-2021-892 is a memory corruption vulnerability in libssh, published on 24 Jun 2021. It can be exploited over the network, with no action from the victim.\nExploitation: There is no known exploitation of OSV-2021-892 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- libssh (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-2021-892/ (Markdown: https://insights.sbomify.com/OSV-2021-892/index.md)","id":"OSV-2021-892","markdown":"https://insights.sbomify.com/OSV-2021-892/index.md","name":"OSV-2021-892","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"SSH library","requires_auth":"unknown","summary":"A heap-buffer-overflow in explicit_bzero within an SSH library allows attackers to cause memory corruption, potentially leading to code execution or 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=35485\n\n```\nCrash type: Heap-buffer-overflow WRITE {*}\nCrash state:\nexplicit_bzero\ncrypto_free\nssh_disconnect\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 explicit_bzero","id":"OSV-2021-892","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"libssh","purl":"pkg:generic/libssh","source":"OSV-2021-892"}],"products":null,"published":"2021-06-24","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 explicit_bzero within an SSH library allows attackers to cause memory corruption, potentially leading to code execution or denial of service.","url":"https://insights.sbomify.com/OSV-2021-892/"}