{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-4216 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-4216 is a medium-severity denial of service vulnerability in Artifex Mupdf, published on 26 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-4216 and fix it if it is affected.\n\nWhat it is: CVE-2021-4216 is a medium-severity denial of service vulnerability in Artifex Mupdf, published on 26 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-4216 in the wild and no public exploit code.\n\nAffected product: Artifex Mupdf. 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-2021-4216/ (Markdown: https://insights.sbomify.com/CVE-2021-4216/index.md)","id":"CVE-2021-4216","markdown":"https://insights.sbomify.com/CVE-2021-4216/index.md","name":"CVE-2021-4216","record":{"aliases":["DEBIAN-CVE-2021-4216","GHSA-fxg7-4q6m-p84h","UBUNTU-CVE-2021-4216","openSUSE-SU-2022:10125-1","openSUSE-SU-2024:12326-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PDF rendering library","requires_auth":"low_privilege","summary":"A division-by-zero flaw in MuPDF allows attackers to cause a denial of service via zero-width pages.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"mupdf","vendor":"artifex"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-369","name":"Divide By Zero"}],"description":"A Floating point exception (division-by-zero) flaw was found in Mupdf for zero width pages in muraster.c. It is fixed in Mupdf-1.20.0-rc1 upstream.","ecosystems":["SUSE:Package Hub 15 SP3","openSUSE:Leap 15.3","openSUSE:Tumbleweed"],"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":"Denial of service in mupdf","id":"CVE-2021-4216","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"artifex:mupdf","products":["artifex:mupdf"],"type":"denial_of_service","year":"2021"},"n_packages":3,"n_references":2,"next":{"headline":"Null dereference in unzip","id":"CVE-2021-4217"},"packages":[{"ecosystem":"SUSE:Package Hub 15 SP3","fixed":["1.12.0-bp153.2.6.1"],"introduced":["0"],"last_affected":[],"package":"mupdf","purl":"pkg:rpm/suse/mupdf\u0026distro=SUSE%20Package%20Hub%2015%20SP3","source":"openSUSE-SU-2022:10125-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["1.12.0-bp153.2.6.1"],"introduced":["0"],"last_affected":[],"package":"mupdf","purl":"pkg:rpm/opensuse/mupdf\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2022:10125-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.20.3-2.1"],"introduced":["0"],"last_affected":[],"package":"mupdf","purl":"pkg:rpm/opensuse/mupdf\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:12326-1"}],"prev":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-4215"},"products":["mupdf"],"published":"2022-08-26","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-7321","kev_date_added":null,"published":"2019-06-13"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-6525","kev_date_added":null,"published":"2016-09-22"},{"cvss_score":9.3,"headline":"Memory corruption in n/a","id":"CVE-2011-0341","kev_date_added":null,"published":"2011-05-13"},{"cvss_score":8.6,"headline":"Memory corruption in MuPDF","id":"CVE-2016-8728","kev_date_added":null,"published":"2018-04-24"},{"cvss_score":7.8,"headline":"Use after free in mupdf","id":"CVE-2021-3407","kev_date_added":null,"published":"2021-02-23"},{"cvss_score":7.8,"headline":"Use after free in n/a","id":"CVE-2020-16600","kev_date_added":null,"published":"2020-12-09"},{"cvss_score":7.8,"headline":"Integer overflow in n/a","id":"CVE-2012-5340","kev_date_added":null,"published":"2020-01-23"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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 division-by-zero flaw in MuPDF allows attackers to cause a denial of service via zero-width pages.","url":"https://insights.sbomify.com/CVE-2021-4216/"}