← Back to VMware vSphere 7.0 vCenter Appliance STS Security Technical Implementation Guide

V-256763

CAT II (Medium)

The Security Token Service must limit the number of allowed connections.

Rule ID

SV-256763r889259_rule

STIG

VMware vSphere 7.0 vCenter Appliance STS Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-001094

Discussion

Limiting the number of established connections to the Security Token Service is a basic denial-of-service protection. Servers where the limit is too high or unlimited can potentially run out of system resources and negatively affect system availability.

Check Content

At the command prompt, run the following command: 
 
# xmllint --xpath '/Server/Service/Connector[@port="${bio-custom.http.port}"]/@acceptCount' /usr/lib/vmware-sso/vmware-sts/conf/server.xml 
 
Expected result: 
 
acceptCount="100" 
 
If the output does not match the expected result, this is a finding.

Fix Text

Navigate to and open: 
 
/usr/lib/vmware-sso/vmware-sts/conf/server.xml 
 
Navigate to the <Connector> configured with port="${bio-custom.http.port}". 
 
Add or change the following value: 
 
acceptCount="100" 
 
Restart the service with the following command: 
 
# vmon-cli --restart sts