{"answers":{"affected":"1 open source package ship an affected version, including lua. It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-43519 in the wild and no public exploit code.","fix":"Upgrade lua to a fixed version for your release line: 5.3.5 or 5.4.4.","what":"CVE-2021-43519 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 9 Nov 2021. 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-2021-43519 and fix it if it is affected.\n\nWhat it is: CVE-2021-43519 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 9 Nov 2021. 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-2021-43519 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- lua (Bitnami): affected from 5.1.0; fixed in 5.3.5, 5.4.4\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-2021-43519/ (Markdown: https://insights.sbomify.com/CVE-2021-43519/index.md)","id":"CVE-2021-43519","markdown":"https://insights.sbomify.com/CVE-2021-43519/index.md","name":"CVE-2021-43519","record":{"aliases":["AZL-41261","AZL-41445","AZL-41574","AZL-41866","AZL-6672","BIT-lua-2021-43519","DEBIAN-CVE-2021-43519","GHSA-g78p-3v3v-h7wm","JLSEC-2026-556","UBUNTU-CVE-2021-43519"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Lua interpreter","requires_auth":"none","summary":"Attackers can cause a denial of service in the Lua interpreter by providing a crafted script file that triggers a stack overflow.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"lua","vendor":"lua"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"Stack overflow in lua_resume of ldo.c in Lua Interpreter 5.1.0~5.4.4 allows attackers to perform a Denial of Service via a crafted script file.","ecosystems":["Bitnami"],"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 n/a","id":"CVE-2021-43519","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"denial_of_service","year":"2021"},"n_packages":1,"n_references":4,"next":{"headline":"Memory corruption in n/a","id":"CVE-2021-43521"},"packages":[{"ecosystem":"Bitnami","fixed":["5.3.5","5.4.4"],"introduced":["5.1.0","5.4.0"],"last_affected":[],"package":"lua","purl":"pkg:bitnami/lua","source":"BIT-lua-2021-43519"}],"prev":{"headline":"Memory corruption in n/a","id":"CVE-2021-43518"},"products":["n/a"],"published":"2021-11-09","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"Attackers can cause a denial of service in the Lua interpreter by providing a crafted script file that triggers a stack overflow.","url":"https://insights.sbomify.com/CVE-2021-43519/"}