{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-36977 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-36977 is a medium-severity memory corruption vulnerability in n/a, published on 20 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-36977 and fix it if it is affected.\n\nWhat it is: CVE-2021-36977 is a medium-severity memory corruption vulnerability in n/a, published on 20 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-36977 in the wild and no public exploit code.\n\nAffected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.\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/CVE-2021-36977/ (Markdown: https://insights.sbomify.com/CVE-2021-36977/index.md)","id":"CVE-2021-36977","markdown":"https://insights.sbomify.com/CVE-2021-36977/index.md","name":"CVE-2021-36977","record":{"aliases":["GHSA-jc5x-q9q8-4xhc","UBUNTU-CVE-2021-36977"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MAT File I/O Library","requires_auth":"none","summary":"A heap-based buffer overflow in the MAT File I/O Library allows attackers to execute arbitrary code or cause denial of service via crafted files.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"matio","vendor":"matio_project"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"matio (aka MAT File I/O Library) 1.5.20 and 1.5.21 has a heap-based buffer overflow in H5MM_memcpy (called from H5MM_malloc and H5C_load_entry), related to use of HDF5 1.12.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Memory corruption in n/a","id":"CVE-2021-36977","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":5,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-36978"},"packages":[],"prev":{"headline":"Use after free in n/a","id":"CVE-2021-36976"},"products":["n/a"],"published":"2021-07-20","related":[{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2019-9028","kev_date_added":null,"published":"2019-02-23"},{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2019-9030","kev_date_added":null,"published":"2019-02-23"},{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2019-9033","kev_date_added":null,"published":"2019-02-23"},{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2019-9034","kev_date_added":null,"published":"2019-02-23"},{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2019-9035","kev_date_added":null,"published":"2019-02-23"},{"cvss_score":9.1,"headline":"Memory corruption in n/a","id":"CVE-2019-9037","kev_date_added":null,"published":"2019-02-23"},{"cvss_score":8.8,"headline":"Integer overflow in n/a","id":"CVE-2020-19497","kev_date_added":null,"published":"2021-07-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A heap-based buffer overflow in the MAT File I/O Library allows attackers to execute arbitrary code or cause denial of service via crafted files.","url":"https://insights.sbomify.com/CVE-2021-36977/"}