VCUI-70-000003 - vSphere UI must limit the maximum size of a POST request.

Information

The 'maxPostSize' value is the maximum size in bytes of the POST which will be handled by the container FORM URL parameter parsing. Limit its size to reduce exposure to a denial-of-service attack.

If 'maxPostSize' is not set, the default value of 2097152 (2MB) is used. The vSphere UI is configured in its shipping state to not set a value for 'maxPostSize'.

Solution

Navigate to and open:

/usr/lib/vmware-vsphere-ui/server/conf/server.xml

Navigate to each of the <Connector> nodes.

Remove any configuration for 'maxPostSize'.

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_7-0_Y23M07_STIG.zip

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-10, CAT|II, CCI|CCI-000054, Rule-ID|SV-256780r889339_rule, STIG-ID|VCUI-70-000003, Vuln-ID|V-256780

Plugin: Unix

Control ID: 97974025d55ab8a60bd87f0dad34f9d49b16094dd4f74ee2761f99caf5c5dfa2