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V-240727

CAT II (Medium)

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

Rule ID

SV-240727r879511_rule

STIG

VMware vRealize Automation 7.x tc Server Security Technical Implementation Guide

Version

V2R3

CCIs

CCI-000054

Discussion

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.

Check Content

At the command prompt, execute the following command:

grep maxThreads /etc/vcac/server.xml

If the value of "maxThreads" is not "1000" or is missing, this is a finding.

Fix Text

Navigate to and open /etc/vcac/server.xml.

Navigate to and locate <Executor>.

Configure the <Executor> with the value 'maxThreads="1000"'.

Note: The <Executor> node should be configured per the following:

<Executor
 maxThreads="1000"
 minSpareThreads="50"
 name="tomcatThreadPool"
 namePrefix="tomcat-http--"/>