VAMI must limit the number of simultaneous requests.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239715	VCLD-67-000001	SV-239715r816779_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. Mitigation against these threats is to take steps to limit the number of resources that can be consumed in certain ways. VAMI provides the "maxConnections" attribute of the <Connector Elements> to limit the number of concurrent TCP connections. This comes preconfigured with a tested, supported value that must be verified and maintained.

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. Mitigation against these threats is to take steps to limit the number of resources that can be consumed in certain ways. VAMI provides the "maxConnections" attribute of the <Connector Elements> to limit the number of concurrent TCP connections. This comes preconfigured with a tested, supported value that must be verified and maintained.

STIG	Date
VMware vSphere 6.7 VAMI-lighttpd Security Technical Implementation Guide	2022-01-03

Details

Check Text ( C-42948r816778_chk )
Note: The below command must be run from a bash shell and not from a shell generated by the "appliance shell". Use the "chsh" command to change the shell for the account to "/bin/bash". At the command prompt, execute the following command: # grep "server.max-connections = 1024" /opt/vmware/etc/lighttpd/lighttpd.conf Expected result: server.max-connections = 1024 If the output does not match the expected result, this is a finding.

Check Text ( C-42948r816778_chk )

Note: The below command must be run from a bash shell and not from a shell generated by the "appliance shell". Use the "chsh" command to change the shell for the account to "/bin/bash".

At the command prompt, execute the following command:

# grep "server.max-connections = 1024" /opt/vmware/etc/lighttpd/lighttpd.conf

Expected result:

server.max-connections = 1024

If the output does not match the expected result, this is a finding.

Fix Text (F-42907r679254_fix)
Navigate to and open /opt/vmware/etc/lighttpd/lighttpd.conf. Add or reconfigure the following value: server.max-connections = 1024