tc Server HORIZON must limit the number of maximum concurrent connections permitted.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-240725	VRAU-TC-000005	SV-240725r879511_rule		Medium

Description
Resource exhaustion can occur when an unlimited number of concurrent requests are allowed on a web site, facilitating a denial-of-service attack. Unless the number of requests is controlled, the web server can consume enough system resources to cause a system crash. Mitigating this kind of attack will include limiting the number of concurrent HTTP/HTTPS requests. Each incoming request requires a thread for the duration of that request. If more simultaneous requests are received than can be handled by the currently available request processing threads, additional threads will be created up to the value of the maxThreads attribute.

Description

Resource exhaustion can occur when an unlimited number of concurrent requests are allowed on a web site, facilitating a denial-of-service attack. Unless the number of requests is controlled, the web server can consume enough system resources to cause a system crash. Mitigating this kind of attack will include limiting the number of concurrent HTTP/HTTPS requests. Each incoming request requires a thread for the duration of that request. If more simultaneous requests are received than can be handled by the currently available request processing threads, additional threads will be created up to the value of the maxThreads attribute.

STIG	Date
VMware vRealize Automation 7.x tc Server Security Technical Implementation Guide	2023-10-03

Details

Check Text ( C-43958r673917_chk )
At the command prompt, execute the following command: grep maxThreads /opt/vmware/horizon/workspace/conf/server.xml If the value of "maxThreads" is not "300" or is missing, this is a finding.

Fix Text (F-43917r673918_fix)
Navigate to and open /opt/vmware/horizon/workspace/conf/server.xml. Navigate to and locate . Configure the with the value 'maxThreads="300"'. Note: The node should be configured per the following: minSpareThreads="50" name="tomcatThreadPool" namePrefix="tomcat-http--"/>