Medium severity · published Sep 25, 2018
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…
5.9
CVSS
50.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)50.8% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTTP Server · Apache
2.4.17 through 2.4.34 · source: NVD
EL
Enterprise Linux · Redhat
6.0; 7.0; 7.4; 7.5; 7.6 · source: NVD
EM
Enterprise Manager Ops Center · Oracle
12.3.3 · source: NVD
HG
Hospitality Guest Access · Oracle
4.2.0; 4.2.1 · source: NVD
IE
Instantis Enterprisetrack · Oracle
17.1; 17.2; 17.3 · source: NVD
RX
Retail Xstore Point OF Service · Oracle
7.0; 7.1 · source: NVD
SG
Secure Global Desktop · Oracle
5.4 · source: NVD
SA
Storage Automation Store · Netapp
All versions, or not specified · source: NVD
UL
Ubuntu Linux · Canonical
18.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-11763
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-11763
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html
Third Party Advisory
http://www.securityfocus.com/bid/105414
Third Party Advisory
http://www.securitytracker.com/id/1041713
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3558
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0366
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