{"answers":{"affected":"4 open source packages ship an affected version, including org.apache.tomcat:tomcat. It affects 1 product.","exploited":"There is no known exploitation of CVE-2016-6817 in the wild and no public exploit code.","fix":"Upgrade org.apache.tomcat:tomcat to a fixed version for your release line: 8.5.8 or 9.0.0.M12.","what":"CVE-2016-6817 is a high-severity denial of service vulnerability in Apache Tomcat, published on 10 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2016-6817 and fix it if it is affected.\n\nWhat it is: CVE-2016-6817 is a high-severity denial of service vulnerability in Apache Tomcat, published on 10 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2016-6817 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.tomcat:tomcat (Maven): affected from 8.5.0; fixed in 8.5.8\n- org.apache.tomcat:tomcat (Maven): affected from 8.5.0; fixed in 8.5.8\n- org.apache.tomcat:tomcat (Maven): affected from 9.0.0.M1; fixed in 9.0.0.M12\n- org.apache.tomcat:tomcat (Maven): affected from 9.0.0.M1; fixed in 9.0.0.M12\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-2016-6817/ (Markdown: https://insights.sbomify.com/CVE-2016-6817/index.md)","id":"CVE-2016-6817","markdown":"https://insights.sbomify.com/CVE-2016-6817/index.md","name":"CVE-2016-6817","record":{"aliases":["GHSA-698c-2x4j-g9gq"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Tomcat","requires_auth":"none","summary":"An attacker can cause a denial of service in Apache Tomcat by sending an oversized HTTP/2 header, triggering an infinite loop in the parser.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"tomcat","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"},{"id":"CWE-835","name":"Loop with Unreachable Exit Condition"}],"description":"The HTTP/2 header parser in Apache Tomcat 9.0.0.M1 to 9.0.0.M11 and 8.5.0 to 8.5.6 entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible.","ecosystems":["Maven"],"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":"Improper Restriction of Operations within the Bounds of a Memory Buffer in Apache Tomcat","id":"CVE-2016-6817","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"apache:tomcat","products":["apache:tomcat"],"type":"denial_of_service","year":"2016"},"n_packages":4,"n_references":8,"next":{"headline":"SQL injection in n/a","id":"CVE-2016-6818"},"packages":[{"ecosystem":"Maven","fixed":["8.5.8"],"introduced":["8.5.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-698c-2x4j-g9gq"},{"ecosystem":"Maven","fixed":["8.5.8"],"introduced":["8.5.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-698c-2x4j-g9gq"},{"ecosystem":"Maven","fixed":["9.0.0.M12"],"introduced":["9.0.0.M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-698c-2x4j-g9gq"},{"ecosystem":"Maven","fixed":["9.0.0.M12"],"introduced":["9.0.0.M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-698c-2x4j-g9gq"}],"prev":{"headline":"Improper Input Validation in Apache Tomcat","id":"CVE-2016-6816"},"products":["Apache Tomcat"],"published":"2017-08-10","related":[{"cvss_score":10,"headline":"Apache Tomcat Path Equivalence","id":"CVE-2025-24813","kev_date_added":"2025-04-01","published":"2025-03-10"},{"cvss_score":9.8,"headline":"Apache Tomcat Remote Code Execution","id":"CVE-2016-8735","kev_date_added":"2023-05-12","published":"2017-04-06"},{"cvss_score":8.1,"headline":"Apache Tomcat Remote Code Execution","id":"CVE-2017-12617","kev_date_added":"2022-03-25","published":"2017-10-03"},{"cvss_score":8.1,"headline":"Apache Tomcat on Windows Remote Code Execution","id":"CVE-2017-12615","kev_date_added":"2022-03-25","published":"2017-09-19"},{"cvss_score":7.5,"headline":"Apache Tomcat Missing Encryption of Sensitive Data","id":"CVE-2026-34486","kev_date_added":"2026-08-04","published":"2026-04-09"},{"cvss_score":9.8,"headline":"Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete","id":"CVE-2026-65637","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.8,"headline":"Apache Tomcat: Limited replay attack possible with DIGEST authentication","id":"CVE-2026-65905","kev_date_added":null,"published":"2026-08-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-10-15","vendors":["Apache Software Foundation"]},"summary":"An attacker can cause a denial of service in Apache Tomcat by sending an oversized HTTP/2 header, triggering an infinite loop in the parser.","url":"https://insights.sbomify.com/CVE-2016-6817/"}