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

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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239670	VCST-67-000019	SV-239670r816735_rule		Medium

Description
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.

STIG	Date
VMware vSphere 6.7 STS Tomcat Security Technical Implementation Guide	2022-01-03

Details

Check Text ( C-42903r816733_chk )
Connect to the PSC, whether external or embedded. At the command prompt, execute the following command: # xmllint --format /usr/lib/vmware-sso/vmware-sts/conf/server.xml \| sed '2 s/xmlns=".*"//g' \| xmllint --xpath '/Server/Service/Connector[@port="${bio-custom.http.port}"]/@acceptCount' - Expected result: acceptCount="100" If the output does not match the expected result, this is a finding.

Fix Text (F-42862r816734_fix)
Connect to the PSC, whether external or embedded. Navigate to and open /usr/lib/vmware-sso/vmware-sts/conf/server.xml. Navigate to the configured with port="${bio-custom.http.port}". Add or change the following value: acceptCount="100"