Vulnerability Details : CVE-2018-11763
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.
Threat overview for CVE-2018-11763
Top countries where our scanners detected CVE-2018-11763
Top open port discovered on systems with this issue
80
IPs affected by CVE-2018-11763 1,999,113
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2018-11763!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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Exploit prediction scoring system (EPSS) score for CVE-2018-11763
Probability of exploitation activity in the next 30 days: 0.88%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 82 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-11763
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
References for CVE-2018-11763
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https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us
HPESBUX03909 rev.1 - HP-UX Web Server Suite running Apache on HP-UX 11iv3, Multiple Remote VulnerabilitiesThird Party Advisory
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https://www.tenable.com/security/tns-2019-09
[R1] Tenable.sc 5.13.0 Fixes Multiple Third-Party Vulnerabilities - Security Advisory | Tenable®
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https://usn.ubuntu.com/3783-1/
USN-3783-1: Apache HTTP Server vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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http://www.securityfocus.com/bid/105414
Apache HTTP Server CVE-2018-11763 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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https://httpd.apache.org/security/vulnerabilities_24.html
httpd 2.4 vulnerabilities - The Apache HTTP Server ProjectVendor Advisory
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https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770@%3Ccvs.httpd.apache.org%3E
svn commit: r1888194 [11/13] - /httpd/site/trunk/content/security/json/ - Pony Mail
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https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E
svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html s
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https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf@%3Ccvs.httpd.apache.org%3E
svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/ - Pony Mail
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https://access.redhat.com/errata/RHSA-2019:0367
RHSA-2019:0367 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c@%3Ccvs.httpd.apache.org%3E
svn commit: r1073139 [11/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ - Pony Mail
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https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E
svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ - Pony Mail
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https://access.redhat.com/errata/RHSA-2019:0366
RHSA-2019:0366 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html
[security-announce] openSUSE-SU-2019:1547-1: important: Security update
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https://security.netapp.com/advisory/ntap-20190204-0004/
CVE-2018-11763 Apache HTTP Server Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
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https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
Oracle Critical Patch Update - April 2019Patch;Third Party Advisory
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https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E
svn commit: r1048743 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_
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https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://access.redhat.com/errata/RHSA-2018:3558
RHSA-2018:3558 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E
Pony Mail!
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https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
Oracle Critical Patch Update - January 2019Patch;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html
[security-announce] openSUSE-SU-2019:1814-1: important: Security update
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https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E
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_2
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http://www.securitytracker.com/id/1041713
Apache HTTPD HTTP/2 SETTINGS Data Processing Bug Lets Remote Users Deny Service - SecurityTrackerThird Party Advisory;VDB Entry
Products affected by CVE-2018-11763
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:secure_global_desktop:5.4:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:retail_xstore_point_of_service:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:retail_xstore_point_of_service:7.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:hospitality_guest_access:4.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:hospitality_guest_access:4.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*