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.

Published: Sep 25, 2018
Updated: Apr 13, 2023
CVE: CVE-2018-11763
Severity: Medium
Exploit:

CVSS v3:

Severity: Medium
Score: 5.9
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

Severity: Low
Score: 4.3
AV:N/AC:M/Au:N/C:N/I:N/A:P

No CWE or OWASP classifications available.

Affected Software
References

Software	From	Fixed in
apache / http_server	2.4.17	2.4.34.x
canonical / ubuntu_linux	18.04	18.04.x
redhat / enterprise_linux	7.4	7.4.x
redhat / enterprise_linux	7.0	7.0.x
redhat / enterprise_linux	6.0	6.0.x
redhat / enterprise_linux	7.5	7.5.x
redhat / enterprise_linux	7.6	7.6.x
oracle / retail_xstore_point_of_service	7.1	7.1.x
oracle / retail_xstore_point_of_service	7.0	7.0.x
oracle / hospitality_guest_access	4.2.0	4.2.0.x
oracle / hospitality_guest_access	4.2.1	4.2.1.x
oracle / enterprise_manager_ops_center	12.3.3	12.3.3.x
oracle / secure_global_desktop	5.4	5.4.x
oracle / instantis_enterprisetrack	17.1	17.1.x
oracle / instantis_enterprisetrack	17.2	17.2.x
oracle / instantis_enterprisetrack	17.3	17.3.x

Vulnerability Database

CVE-2018-11763

Deep Security Visibility Without the Complexity