Medium severity5.9NVD Advisory· Published Sep 25, 2018· Updated Jun 17, 2026
CVE-2018-11763
CVE-2018-11763
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
17>=2.4.17 <=2.4.34+ 1 more
- (no CPE)range: >=2.4.17 <=2.4.34
- (no CPE)range: 2.4.17 to 2.4.34
- osv-coords15 versionspkg:rpm/opensuse/virtualbox&distro=openSUSE%20Leap%2015.0pkg:rpm/opensuse/virtualbox&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/virtualbox&distro=openSUSE%20Tumbleweedpkg:rpm/suse/apache2&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/apache2&distro=SUSE%20OpenStack%20Cloud%207
< 5.2.24-lp150.4.33.1+ 14 more
- (no CPE)range: < 5.2.24-lp150.4.33.1
- (no CPE)range: < 6.0.10-lp151.2.6.1
- (no CPE)range: < 6.1.26-3.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.33-3.6.1
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
- (no CPE)range: < 2.4.23-29.27.2
Patches
Vulnerability mechanics
References
26- www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlnvdPatchThird Party Advisory
- www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlnvdPatchThird Party Advisory
- www.securityfocus.com/bid/105414nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1041713nvdThird Party AdvisoryVDB Entry
- access.redhat.com/errata/RHSA-2018:3558nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:0366nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:0367nvdThird Party Advisory
- httpd.apache.org/security/vulnerabilities_24.htmlnvdVendor Advisory
- security.netapp.com/advisory/ntap-20190204-0004/nvdThird Party Advisory
- support.hpe.com/hpsc/doc/public/displaynvdThird Party Advisory
- usn.ubuntu.com/3783-1/nvdThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.htmlnvd
- lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3Envd
- lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3Envd
- www.tenable.com/security/tns-2019-09nvd
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