Detections
Analytics
VCUI-80-000125 The vCenter UI service must limit the amount of time that each Transmission Control Protocol (TCP) connection is kept alive.
Information
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 request 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.
Solution
Navigate to and open:/usr/lib/vmware-vsphere-ui/server/conf/server.xml
Configure the <Connector> node with the value:
connectionTimeout="300000"
Restart the service with the following command:
# vmon-cli --restart vsphere-ui
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_8-0_Y24M08_STIG.zip
Item Details
Category: ACCESS CONTROL
References: 800-53|AC-10, CAT|II, CCI|CCI-000054, Rule-ID|SV-259119r960735_rule, STIG-ID|VCUI-80-000125, Vuln-ID|V-259119
Plugin: Unix
Control ID: 3eb64dc8c33ce814fd8abc06970818e5476daa381cca11a8eb19e614bb492d96