The vCenter Envoy service must set a limit on remote connections.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-259165 | VCRP-80-000098 | SV-259165r935399_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 "maxRemoteHttpsConnections" and "maxRemoteHttpConnections" that must be verified and maintained. |
| STIG | Date |
|---|---|
| VMware vSphere 8.0 vCenter Appliance Envoy Security Technical Implementation Guide | 2023-10-29 |
Details
| Check Text ( C-62905r935397_chk ) |
|---|
| At the command prompt, run the following commands: # xmllint --xpath '/config/envoy/L4Filter/maxRemoteHttpsConnections/text()' /etc/vmware-rhttpproxy/config.xml # xmllint --xpath '/config/envoy/L4Filter/maxRemoteHttpConnections/text()' /etc/vmware-rhttpproxy/config.xml Example result: 2048 or XPath set is empty If the output is not "2048" or "XPath set it empty", this is a finding. Note: If "XPath set is empty" is returned the default values are in effect and is 2048. |
| Fix Text (F-62814r935398_fix) |
|---|
| Navigate to and open: /etc/vmware-rhttpproxy/config.xml Locate the Restart the service for changes to take effect. # vmon-cli --restart rhttpproxy |