{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-23191 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-23191 is a high-severity vulnerability in htmldoc, published on 2 Mar 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-23191 and fix it if it is affected.\n\nWhat it is: CVE-2021-23191 is a high-severity vulnerability in htmldoc, published on 2 Mar 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-23191 in the wild and no public exploit code.\n\nAffected product: htmldoc. 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-2021-23191/ (Markdown: https://insights.sbomify.com/CVE-2021-23191/index.md)","id":"CVE-2021-23191","markdown":"https://insights.sbomify.com/CVE-2021-23191/index.md","name":"CVE-2021-23191","record":{"aliases":["DEBIAN-CVE-2021-23191","GHSA-rh6g-g88g-qmfg","UBUNTU-CVE-2021-23191"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"HTML document converter","requires_auth":"none","summary":"A NULL pointer dereference in htmldoc allows attackers to cause a denial of service via crafted JPEG images.","user_interaction":"required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"htmldoc","vendor":"htmldoc_project"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"A security issue was found in htmldoc v1.9.12 and before. A NULL pointer dereference in the function image_load_jpeg() in image.cxx may result in denial of service.","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":"Null dereference in htmldoc","id":"CVE-2021-23191","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Security feature bypass in samba","id":"CVE-2021-23192"},"packages":[],"prev":{"headline":"Information disclosure in Intel(R) PROSet/Wireless WiFi and Killer(TM) WiFi products","id":"CVE-2021-23188"},"products":["htmldoc"],"published":"2022-03-02","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2024-46478","kev_date_added":null,"published":"2024-10-24"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2024-45508","kev_date_added":null,"published":"2024-09-01"},{"cvss_score":9.8,"headline":"Memory corruption in htmldoc","id":"CVE-2021-23158","kev_date_added":null,"published":"2022-03-16"},{"cvss_score":9.8,"headline":"Memory corruption in htmldoc","id":"CVE-2021-23165","kev_date_added":null,"published":"2022-03-16"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2021-34119","kev_date_added":null,"published":"2023-07-18"},{"cvss_score":7.8,"headline":"Information disclosure in n/a","id":"CVE-2021-34121","kev_date_added":null,"published":"2023-07-18"},{"cvss_score":7.8,"headline":"Memory corruption in n/a","id":"CVE-2022-28085","kev_date_added":null,"published":"2022-04-27"}],"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":"2024-08-03","vendors":["n/a"]},"summary":"A NULL pointer dereference in htmldoc allows attackers to cause a denial of service via crafted JPEG images.","url":"https://insights.sbomify.com/CVE-2021-23191/"}