Title

The Tanium web server must be tuned to handle the operational requirements of the hosted application. (Cat II impact)

Discussion

DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. This requirement addresses the configuration of applications to mitigate the impact of DoS attacks that have occurred or are ongoing on application availability. For each application, known and potential DoS attacks must be identified and solutions for each type implemented. A variety of technologies exist to limit or, in some cases, eliminate the effects of DoS attacks (e.g., limiting processes or restricting the number of sessions the application opens at one time). Employing increased capacity and bandwidth, combined with service redundancy, may reduce the susceptibility to some DoS attacks. An attacker has at least two reasons to stop a web server. The first is to cause a Denial of Service (DoS), and the second is to put in place changes the attacker made to the web server configuration. To prohibit an attacker from stopping the web server, the process ID (pid) of the web server and the utilities used to start/stop the web server must be protected from access by non-privileged users. By knowing the pid and having access to the web server utilities, a non-privileged user has a greater capability of stopping the server, whether intentionally or unintentionally.

Check Content

As part of any Tanium install, Tanium has a tuning process that takes into account customer-provided inputs on the size of the deployment as well as characteristics of the network. Obtain from Tanium the document that states the tuning settings for the particular installation. If the organization cannot provide a server-tuning document from the vendor, this is a finding.

Fix Text

Obtain the vendor tuning documentation for the deployment. Include it in the system's documentation as proof of tuning.

Additional Identifiers

Rule ID: SV-234129r612749_rule

Vulnerability ID: V-234129

Group Title: SRG-APP-000435

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.