Vulnerability CVE-2018-11763
Published: 2018-09-25

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.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Redhat -> Enterprise linux 
Oracle -> Secure global desktop 
Oracle -> Enterprise manager ops center 
Oracle -> Hospitality guest access 
Oracle -> Instantis enterprisetrack 
Oracle -> Retail xstore point of service 
Netapp -> Storage automation store 
Canonical -> Ubuntu linux 
Apache -> Http server 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html
http://www.securityfocus.com/bid/105414
http://www.securitytracker.com/id/1041713
https://access.redhat.com/errata/RHSA-2018:3558
https://access.redhat.com/errata/RHSA-2019:0366
https://access.redhat.com/errata/RHSA-2019:0367
https://httpd.apache.org/security/vulnerabilities_24.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://usn.ubuntu.com/3783-1/
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
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