CVE-2018-11763

EPSS 22.36% · P96 Updated Feb 21, 2026

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I. Basic Information for CVE-2018-11763

Vulnerability Information

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Vulnerability Title

N/A

Source: NVD (National Vulnerability Database)

Vulnerability 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.

Source: NVD (National Vulnerability Database)

CVSS Information

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Type

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Title

Apache HTTP Server 输入验证错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Apache HTTP Server是美国阿帕奇（Apache）软件基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server 2.4.17版本至2.4.34版本中存在安全漏洞。攻击者可通过持续发送较大的SETTINGS帧利用该漏洞在客户端占据连接，服务器线程和CPU时间时造成连接超时失效，导致拒绝服务。

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Apache Software Foundation	Apache HTTP Server	2.4.17 to 2.4.34	-

II. Public POCs for CVE-2018-11763

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2018-11763

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https://www.tenable.com/security/tns-2019-09x_refsource_CONFIRM
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_usx_refsource_CONFIRM
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlx_refsource_CONFIRM
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlx_refsource_MISC
https://security.netapp.com/advisory/ntap-20190204-0004/x_refsource_CONFIRM
Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Projectx_refsource_CONFIRM
http://www.securityfocus.com/bid/105414vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1041713vdb-entryx_refsource_SECTRACK
https://usn.ubuntu.com/3783-1/vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:0367vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:0366vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:3558vendor-advisoryx_refsource_REDHAT
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.htmlvendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.htmlvendor-advisoryx_refsource_SUSE
https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/-Apache Mail Archivesmailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html-Apache Mail Archivesmailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3Emailing-listx_refsource_MLIST
https://nvd.nist.gov/vuln/detail/CVE-2018-11763

IV. Related Vulnerabilities

Same product: Apache HTTP Server

Same vendor: Apache Software Foundation

V. Comments for CVE-2018-11763

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CVE-2018-11763

I. Basic Information for CVE-2018-11763

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2018-11763

III. Intelligence Information for CVE-2018-11763

IV. Related Vulnerabilities

V. Comments for CVE-2018-11763

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