CVE-2018-11763medium
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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.
References
https://httpd.apache.org/security/vulnerabilities_24.html
http://www.securitytracker.com/id/1041713
http://www.securityfocus.com/bid/105414
https://usn.ubuntu.com/3783-1/
https://access.redhat.com/errata/RHSA-2018:3558
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://security.netapp.com/advisory/ntap-20190204-0004/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us
https://access.redhat.com/errata/RHSA-2019:0367
https://access.redhat.com/errata/RHSA-2019:0366
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://www.tenable.com/security/tns-2019-09
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
Details
Source: MITRE
Published: 2018-09-25
Updated: 2021-06-06
Type: NVD-CWE-noinfo
Risk Information
CVSS v2
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
CVSS v3
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.2
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* versions from 2.4.17 to 2.4.34 (inclusive)
Configuration 2
OR
Configuration 3
OR
cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Configuration 4
OR
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_xstore_point_of_service:7.1:*:*:*:*:*:*:*
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:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_xstore_point_of_service:7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
Configuration 5
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 131476 | EulerOS Virtualization for ARM 64 3.0.3.0 : httpd (EulerOS-SA-2019-2311) | Nessus | Huawei Local Security Checks | high |
| 127734 | openSUSE Security Update : virtualbox (openSUSE-2019-1814) | Nessus | SuSE Local Security Checks | critical |
| 125844 | openSUSE Security Update : virtualbox (openSUSE-2019-1547) | Nessus | SuSE Local Security Checks | high |
| 125147 | Oracle Enterprise Manager Ops Center (Apr 2019 CPU) | Nessus | Misc. | critical |
| 124170 | Oracle Primavera Unifier Multiple Vulnerabilities (Apr 2019 CPU) | Nessus | CGI abuses | critical |
| 124169 | Oracle Primavera P6 Enterprise Project Portfolio Management (EPPM) Multiple Vulnerabilities (Apr 2019 CPU) | Nessus | CGI abuses | critical |
| 123337 | openSUSE Security Update : apache2 (openSUSE-2019-791) | Nessus | SuSE Local Security Checks | medium |
| 122292 | RHEL 6 / 7 : Red Hat JBoss Core Services Apache HTTP Server 2.4.29 (RHSA-2019:0367) | Nessus | Red Hat Local Security Checks | critical |
| 122016 | Photon OS 1.0: Httpd PHSA-2019-1.0-0203 | Nessus | PhotonOS Local Security Checks | critical |
| 121601 | Oracle Secure Global Desktop Multiple Vulnerabilities (January 2019 CPU) | Nessus | Misc. | medium |
| 98916 | Apache 2.4.x < 2.4.35 Denial of Service | Web Application Scanning | Component Vulnerability | medium |
| 121411 | openSUSE Security Update : virtualbox (openSUSE-2019-84) | Nessus | SuSE Local Security Checks | high |
| 121368 | Amazon Linux 2 : httpd (ALAS-2019-1155) | Nessus | Amazon Linux Local Security Checks | medium |
| 120654 | Fedora 29 : mod_http2 (2018-9cdbb641f9) | Nessus | Fedora Local Security Checks | medium |
| 120519 | Fedora 28 : mod_http2 (2018-6ffb18592f) | Nessus | Fedora Local Security Checks | medium |
| 120127 | SUSE SLES15 Security Update : apache2 (SUSE-SU-2018:3101-1) | Nessus | SuSE Local Security Checks | medium |
| 119687 | Amazon Linux AMI : httpd24 (ALAS-2018-1104) | Nessus | Amazon Linux Local Security Checks | medium |
| 119449 | SUSE SLES12 Security Update : apache2 (SUSE-SU-2018:3582-2) | Nessus | SuSE Local Security Checks | medium |
| 118875 | openSUSE Security Update : apache2 (openSUSE-2018-1378) | Nessus | SuSE Local Security Checks | medium |
| 118835 | Amazon Linux 2 : mod_http2 (ALAS-2018-1104) | Nessus | Amazon Linux Local Security Checks | medium |
| 118566 | SUSE SLES12 Security Update : apache2 (SUSE-SU-2018:3582-1) | Nessus | SuSE Local Security Checks | medium |
| 118242 | Fedora 27 : mod_http2 (2018-bb9d24c82d) | Nessus | Fedora Local Security Checks | medium |
| 118170 | openSUSE Security Update : apache2 (openSUSE-2018-1178) | Nessus | SuSE Local Security Checks | medium |
| 117916 | Ubuntu 18.04 LTS : apache2 vulnerabilities (USN-3783-1) | Nessus | Ubuntu Local Security Checks | high |
| 117807 | Apache 2.4.x < 2.4.35 DoS | Nessus | Web Servers | medium |
| 117724 | FreeBSD : Apache -- Denial of service vulnerability in HTTP/2 (e182c076-c189-11e8-a6d2-b499baebfeaf) | Nessus | FreeBSD Local Security Checks | medium |