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The Security Token Service must limit the amount of time that each Transmission Control Protocol (TCP) connection is kept alive.


Overview

Finding ID Version Rule ID IA Controls Severity
V-256745 VCST-70-000001 SV-256745r889205_rule Medium
Description
Denial of service (DoS) is one threat against web servers. Many DoS attacks attempt to consume web server resources in such a way that no more resources are available to satisfy legitimate requests. In Tomcat, the "connectionTimeout" attribute sets the number of milliseconds the server will wait after accepting a connection for the requested Uniform Resource Identifier (URI) line to be presented. This timeout will also be used when reading the request body (if any). This prevents idle sockets that are not sending HTTP requests from consuming system resources and potentially denying new connections.
STIG Date
VMware vSphere 7.0 vCenter Appliance STS Security Technical Implementation Guide 2023-06-15

Details

Check Text ( C-60420r889203_chk )
At the command prompt, run the following command:

# xmllint --xpath '/Server/Service/Connector[@port="${bio-custom.http.port}"]/@connectionTimeout' /usr/lib/vmware-sso/vmware-sts/conf/server.xml

Expected result:

connectionTimeout="60000"

If the output does not match the expected result, this is a finding.
Fix Text (F-60363r889204_fix)
Navigate to and open:

/usr/lib/vmware-sso/vmware-sts/conf/server.xml

Navigate to each of the nodes.

Configure each node with the value:

connectionTimeout="60000"

Restart the service with the following command:

# vmon-cli --restart sts