{"id":"CVE-2018-11763","details":"In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.","modified":"2026-04-16T06:21:42.913110238Z","published":"2018-09-25T21:29:00.283Z","related":["SUSE-SU-2018:3101-1","SUSE-SU-2018:3582-1","SUSE-SU-2018:3582-2","openSUSE-SU-2019:1547-1","openSUSE-SU-2019:1814-1","openSUSE-SU-2024:11501-1"],"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://www.tenable.com/security/tns-2019-09"},{"type":"WEB","url":"https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190204-0004/"},{"type":"ADVISORY","url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3783-1/"},{"type":"ADVISORY","url":"https://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1041713"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3558"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0367"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/105414"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0366"},{"type":"FIX","url":"https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"},{"type":"FIX","url":"https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/httpd","events":[{"introduced":"47a9d8e8abf5697b4580c3ee2ade302b5c058fa6"},{"last_affected":"e0b198f98b01973f75cb734b3864c429945dbdb0"}],"database_specific":{"versions":[{"introduced":"2.4.17"},{"last_affected":"2.4.34"}]}}],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"6.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.5"}]},{"events":[{"introduced":"0"},{"last_affected":"7.6"}]},{"events":[{"introduced":"0"},{"last_affected":"12.3.3"}]},{"events":[{"introduced":"0"},{"last_affected":"4.2.0"}]},{"events":[{"introduced":"0"},{"last_affected":"4.2.1"}]},{"events":[{"introduced":"0"},{"last_affected":"17.1"}]},{"events":[{"introduced":"0"},{"last_affected":"17.2"}]},{"events":[{"introduced":"0"},{"last_affected":"17.3"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.4"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-11763.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}