{"id":"CVE-2013-4322","aliases":["DLA-91-1","DSA-2897-1","DSA-3530-1","EUVD-2022-5618","GHSA-wq2p-q66w-q8gp","MGASA-2014-0148","MGASA-2014-0149","RHSA-2014:0429","RHSA-2014:0525","RHSA-2014:0526","RHSA-2014:0686","UBUNTU-CVE-2013-4322"],"status":"published","title":"Apache Tomcat Denial of Service vulnerability","description":"Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.09095,"percentile":0.95335,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-20","CWE-400"],"published":"2014-02-26T00:00:00Z","modified":"2026-10-09T20:17:07Z","exploits":[{"source":"pocgithub","id":"LiviuPtr/CVE-2013-4322_PoC","title":"LiviuPtr/CVE-2013-4322_PoC","date":"2026-01-18","url":"https://github.com/LiviuPtr/CVE-2013-4322_PoC"}],"fixes":[{"ecosystem":"Maven","package":"org.apache.tomcat:tomcat","fixed_in":["6.0.39","8.0.0-RC10","7.0.50"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.39"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0-RC1"},{"fixed":"8.0.0-RC10"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.0.0"},{"fixed":"7.0.50"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"tomcat6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.41-2+squeeze5"}]}],"versions":["6.0.28-10","6.0.28-9","6.0.28-9+squeeze1","6.0.32-1","6.0.32-2","6.0.32-3","6.0.32-4","6.0.32-5","6.0.32-6","6.0.32-7","6.0.33-1","6.0.35-1","6.0.35-1+squeeze2","6.0.35-1+squeeze3","6.0.35-1+squeeze4","6.0.35-2","6.0.35-3","6.0.35-4","6.0.35-5","6.0.35-5+nmu1","6.0.35-6","6.0.35-7","6.0.37-1","6.0.39-1","6.0.41-1","6.0.41-2"],"bundled":4},{"source":"osv","ecosystem":"Debian:7","package":"tomcat7","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.28-4+deb7u1"}]}],"versions":["7.0.28-4"],"bundled":6},{"source":"osv","ecosystem":"Debian:7","package":"tomcat6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.45+dfsg-1~deb7u1"}]}],"versions":["6.0.35-6","6.0.35-6+deb7u1","6.0.35-7","6.0.37-1","6.0.39-1","6.0.41-1","6.0.41-2","6.0.41-2+squeeze5","6.0.41-2+squeeze6","6.0.41-2+squeeze7","6.0.41-3","6.0.41-4","6.0.45-1~deb6u1"],"bundled":18},{"source":"osv","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.39"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.0.0"},{"fixed":"7.0.50"}]}],"versions":["7.0.35","7.0.37","7.0.39","7.0.40","7.0.41","7.0.42","7.0.47"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.tomcat:tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0-RC1"},{"fixed":"8.0.0-RC10"}]}],"versions":["8.0.0-RC1","8.0.0-RC3","8.0.0-RC5"]},{"source":"osv","ecosystem":"Mageia:3","package":"tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.52-1.mga3"}]}],"bundled":3},{"source":"osv","ecosystem":"Mageia:4","package":"tomcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.52-1.mga4"}]}],"bundled":3},{"source":"osv","ecosystem":"Red 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Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","status":"published","published":"2014-02-26T11:00:00Z","modified":"2026-10-09T19:12:25.754Z","updated_at":"2026-11-02T14:34:57.499208Z"}],"euvd":[{"id":"EUVD-2022-5618","description":"Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","status":"published","published":"2014-02-26T11:00:00Z","modified":"2026-10-09T19:12:25Z","updated_at":"2026-11-02T17:27:24.157251Z"}],"ghsa":[{"id":"GHSA-wq2p-q66w-q8gp","title":"Apache Tomcat Denial of Service vulnerability","description":"Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","status":"published","published":"2022-05-14T01:10:35Z","modified":"2024-02-22T16:11:26Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:38.935144Z"}],"nvd":[{"id":"CVE-2013-4322","description":"Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","status":"published","published":"2014-02-26T14:55:08.193Z","modified":"2026-10-09T20:17:07.663Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:48.062712Z"}],"osv":[{"id":"DLA-91-1","title":"tomcat6 - security update","status":"published","published":"2014-11-23T00:00:00Z","modified":"2026-03-09T02:09:51.417515Z","updated_at":"2026-11-02T15:46:13.584509Z"},{"id":"DSA-2897-1","title":"tomcat7 - security update","status":"published","published":"2014-04-08T00:00:00Z","modified":"2026-03-09T01:18:45.204972Z","updated_at":"2026-11-02T15:46:15.843838Z"},{"id":"DSA-3530-1","title":"tomcat6 - security update","status":"published","published":"2016-03-25T00:00:00Z","modified":"2026-03-09T01:22:25.978219Z","updated_at":"2026-11-02T15:46:16.199525Z"},{"id":"GHSA-wq2p-q66w-q8gp","title":"Apache Tomcat Denial of Service vulnerability","description":"Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","status":"published","published":"2022-05-14T01:10:35Z","modified":"2024-11-28T05:40:25.504365Z","cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:58.767335Z"},{"id":"MGASA-2014-0148","title":"Updated tomcat package fixes security vulnerabilities","description":"Apache Tomcat 7.x before 7.0.47, when an HTTP connector or AJP connector\nis used, does not properly handle certain inconsistent HTTP request\nheaders, which allows remote attackers to trigger incorrect identification\nof a request's length and conduct request-smuggling attacks via (1)\nmultiple Content-Length headers or (2) a Content-Length header and a\n\"Transfer-Encoding: chunked\" header (CVE-2013-4286).\n\nApache Tomcat 7.x before 7.0.50 processes chunked transfer coding without\nproperly handling (1) a large total amount of chunked data or (2)\nwhitespace characters in an HTTP header value within a trailer field,\nwhich allows remote attackers to cause a denial of service by streaming\ndata  (CVE-2013-4322).\n\nApache Tomcat 7.x before 7.0.50 allows attackers to obtain \"Tomcat\ninternals\" information by leveraging the presence of an untrusted web\napplication with a context.xml, web.xml, *.jspx, *.tagx, or *.tld XML\ndocument containing an external entity declaration in conjunction with an\nentity reference, related to an XML External Entity (XXE) issue\n(CVE-2013-4590).\n","status":"published","published":"2014-04-03T00:16:05Z","modified":"2026-04-16T06:24:39.099499963Z","updated_at":"2026-11-02T15:49:39.121227Z"},{"id":"MGASA-2014-0149","title":"Updated tomcat package fixes security vulnerabilities","description":"Apache Tomcat 7.x before 7.0.50 processes chunked transfer coding without\nproperly handling (1) a large total amount of chunked data or (2)\nwhitespace characters in an HTTP header value within a trailer field,\nwhich allows remote attackers to cause a denial of service by streaming\ndata  (CVE-2013-4322).\n\nApache Tomcat 7.x before 7.0.50 allows attackers to obtain \"Tomcat\ninternals\" information by leveraging the presence of an untrusted web\napplication with a context.xml, web.xml, *.jspx, *.tagx, or *.tld XML\ndocument containing an external entity declaration in conjunction with an\nentity reference, related to an XML External Entity (XXE) issue\n(CVE-2013-4590).\n","status":"published","published":"2014-04-03T00:16:05Z","modified":"2026-04-16T06:25:19.175492228Z","updated_at":"2026-11-02T15:49:39.121227Z"},{"id":"RHSA-2014:0429","title":"Red Hat Security Advisory: tomcat6 security update","status":"published","published":"2024-09-15T21:27:46Z","modified":"2026-08-05T10:02:32Z","updated_at":"2026-11-02T15:53:01.993625Z"},{"id":"RHSA-2014:0525","title":"Red Hat Security Advisory: Red Hat JBoss Web Server 2.0.1 tomcat6 security update","status":"published","published":"2024-09-15T21:33:18Z","modified":"2026-08-05T10:02:34Z","updated_at":"2026-11-02T15:53:02.532052Z"},{"id":"RHSA-2014:0526","title":"Red Hat Security Advisory: Red Hat JBoss Web Server 2.0.1 tomcat7 security update","status":"published","published":"2024-09-15T21:28:05Z","modified":"2026-08-05T10:02:34Z","updated_at":"2026-11-02T15:53:02.532052Z"},{"id":"RHSA-2014:0686","title":"Red Hat Security Advisory: tomcat security update","status":"published","published":"2024-09-15T21:39:39Z","modified":"2026-08-05T10:02:37Z","updated_at":"2026-11-02T15:53:02.532052Z"},{"id":"UBUNTU-CVE-2013-4322","description":"Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.","status":"withdrawn","published":"2014-02-26T00:00:00Z","modified":"2026-02-04T03:12:41.631008Z","updated_at":"2026-11-02T15:54:07.421078Z"}]}}