Envoy must set a limit on established connections.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-256738	VCRP-70-000002	SV-256738r889152_rule		Medium

Description
Envoy client connections must be limited to preserve system resources and continue servicing connections without interruption. Without a limit set, the system would be vulnerable to a trivial denial-of-service attack where connections are created en masse and vCenter resources are entirely consumed. Envoy comes hard coded with a tested and supported value for "maxHttpsConnections" that must be verified and maintained.

Description

Envoy client connections must be limited to preserve system resources and continue servicing connections without interruption. Without a limit set, the system would be vulnerable to a trivial denial-of-service attack where connections are created en masse and vCenter resources are entirely consumed. Envoy comes hard coded with a tested and supported value for "maxHttpsConnections" that must be verified and maintained.

STIG	Date
VMware vSphere 7.0 vCenter Appliance RhttpProxy Security Technical Implementation Guide	2023-02-21

Details

Check Text ( C-60413r889150_chk )
At the command prompt, run the following command: # xmllint --xpath '/config/envoy/L4Filter/maxHttpsConnections/text()' /etc/vmware-rhttpproxy/config.xml Expected result: 2048 or XPath set is empty If the output does not match the expected result, this is a finding.

Fix Text (F-60356r889151_fix)
Navigate to and open: /etc/vmware-rhttpproxy/config.xml Locate the // block and configure as follows: 2048 Restart the service for changes to take effect. # vmon-cli --restart rhttpproxy