{"api_version":"1","generated_at":"2026-04-22T19:36:59+00:00","cve":"CVE-2023-36478","urls":{"html":"https://cve.report/CVE-2023-36478","api":"https://cve.report/api/cve/CVE-2023-36478.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-36478","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-36478"},"summary":{"title":"CVE-2023-36478","description":"Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in `MetaDataBuilder.checkSize` allows for HTTP/2 HPACK header values to\nexceed their size limit. `MetaDataBuilder.java` determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true, the multiplication by 4 in line 295\nwill overflow, and length will become negative. `(_size+length)` will now be negative, and the check on line 296 will not be triggered. Furthermore, `MetaDataBuilder.checkSize` allows for user-entered HPACK header value sizes to be negative, potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by 2. This means that if a user provides a negative length value (or, more precisely, a length value which, when multiplied by the 4/3 fudge factor, is negative), and this length value is a very large positive number when multiplied by 2, then the user can cause a very large buffer to be allocated on the server. Users of HTTP/2 can be impacted by a remote denial of service attack. The issue has been fixed in versions 11.0.16, 10.0.16, and 9.4.53. There are no known workarounds.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-10-10 17:15:00","updated_at":"2023-11-16 16:15:00"},"problem_types":["CWE-190"],"metrics":[],"references":[{"url":"https://github.com/eclipse/jetty.project/pull/9634","name":"https://github.com/eclipse/jetty.project/pull/9634","refsource":"MISC","tags":[],"title":"Issue #9554 - move common hpack/qpack code to jetty-http (jetty-10) by lachlan-roberts · Pull Request #9634 · eclipse/jetty.project · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/eclipse/jetty.project/releases/tag/jetty-11.0.16","name":"https://github.com/eclipse/jetty.project/releases/tag/jetty-11.0.16","refsource":"MISC","tags":[],"title":"Release 11.0.16 · eclipse/jetty.project · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/eclipse/jetty.project/security/advisories/GHSA-wgh7-54f2-x98r","name":"https://github.com/eclipse/jetty.project/security/advisories/GHSA-wgh7-54f2-x98r","refsource":"MISC","tags":[],"title":"HTTP/2 HPACK integer overflow and buffer allocation · Advisory · eclipse/jetty.project · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.netapp.com/advisory/ntap-20231116-0011/","name":"https://security.netapp.com/advisory/ntap-20231116-0011/","refsource":"","tags":[],"title":"","mime":"","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/18/4","name":"http://www.openwall.com/lists/oss-security/2023/10/18/4","refsource":"MISC","tags":[],"title":"oss-security - Vulnerability in Jenkins","mime":"text/html","httpstatus":"200","archivestatus":"429"},{"url":"https://www.debian.org/security/2023/dsa-5540","name":"https://www.debian.org/security/2023/dsa-5540","refsource":"MISC","tags":[],"title":"Debian -- Security Information -- DSA-5540-1 jetty9","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html","name":"https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html","refsource":"MISC","tags":[],"title":"[SECURITY] [DLA 3641-1] jetty9 security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/eclipse/jetty.project/releases/tag/jetty-9.4.53.v20231009","name":"https://github.com/eclipse/jetty.project/releases/tag/jetty-9.4.53.v20231009","refsource":"MISC","tags":[],"title":"Release 9.4.53.v20231009 · eclipse/jetty.project · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/eclipse/jetty.project/releases/tag/jetty-10.0.16","name":"https://github.com/eclipse/jetty.project/releases/tag/jetty-10.0.16","refsource":"MISC","tags":[],"title":"Release 10.0.16 · eclipse/jetty.project · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-36478","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-36478","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"36478","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"eclipse","cpe5":"jetty","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36478","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jenkins","cpe5":"jenkins","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"-","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36478","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"jenkins","cpe5":"jenkins","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"lts","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-36478","qid":"379452","title":"IBM Cognos Analytics Multiple Vulnerabilities (7123154)"},{"cve":"CVE-2023-36478","qid":"379516","title":"IBM Sterling Secure Proxy Multiple Vulnerabilities (7142038)"},{"cve":"CVE-2023-36478","qid":"503390","title":"Alpine Linux Security Update for jetty-runner"},{"cve":"CVE-2023-36478","qid":"506101","title":"Alpine Linux Security Update for jetty-runner"},{"cve":"CVE-2023-36478","qid":"6000267","title":"Debian Security Update for jetty9 (DLA 3641-1)"},{"cve":"CVE-2023-36478","qid":"6000299","title":"Debian Security Update for jetty9 (DSA 5540-1)"},{"cve":"CVE-2023-36478","qid":"691330","title":"Free Berkeley Software Distribution (FreeBSD) Security Update for jenkins (1ee26d45-6ddb-11ee-9898-00e081b7aa2d)"},{"cve":"CVE-2023-36478","qid":"730958","title":"Jenkins HTTP/2 Denial of Service (DoS) Vulnerability (Jenkins Security Advisory 2023-10-18)"},{"cve":"CVE-2023-36478","qid":"731282","title":"Atlassian Confluence Data Center and Server Multiple Security Vulnerabilities (CONFSERVER-94604, CONFSERVER-94843)"},{"cve":"CVE-2023-36478","qid":"731321","title":"Atlassian Confluence Data Center and Server Denial of Service (DoS) Vulnerability (CONFSERVER-94843)"},{"cve":"CVE-2023-36478","qid":"755165","title":"SUSE Enterprise Linux Security Update for jetty-minimal (SUSE-SU-2023:4210-1)"},{"cve":"CVE-2023-36478","qid":"995551","title":"Java (Maven) Security Update for org.eclipse.jetty.http2:http2-hpack (GHSA-wgh7-54f2-x98r)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-36478","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in `MetaDataBuilder.checkSize` allows for HTTP/2 HPACK header values to\nexceed their size limit. `MetaDataBuilder.java` determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true, the multiplication by 4 in line 295\nwill overflow, and length will become negative. `(_size+length)` will now be negative, and the check on line 296 will not be triggered. Furthermore, `MetaDataBuilder.checkSize` allows for user-entered HPACK header value sizes to be negative, potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by 2. This means that if a user provides a negative length value (or, more precisely, a length value which, when multiplied by the 4/3 fudge factor, is negative), and this length value is a very large positive number when multiplied by 2, then the user can cause a very large buffer to be allocated on the server. Users of HTTP/2 can be impacted by a remote denial of service attack. The issue has been fixed in versions 11.0.16, 10.0.16, and 9.4.53. 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