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About Security Controls

Security controls are methods in your code that make sure data is safe to use. Only users assigned an organizational role of Rules_Admin or higher can view or modify security controls.

There are two types of security controls:

  • Input Validators are methods that accept a user input and take corrective action if unsafe data is received.

  • Sanitizers are methods that clean the data passed in, rendering it safe for consumption by any interpreter. Many sanitizers may prevent one type of attack, but not necessarily another.

Create and Manage Security Controls

Policy Management

Access security controls by navigating from the User menu > Policy Management > Security Controls tab. If there are existing security controls, click on the name in the grid to edit further details or delete it altogether. You can also edit the API directly in the grid.

To create a new security control, click the Add Security Control button.

After choosing a Name, Type and Language, specify the API and choose the vulnerability rules to which you'd like to apply the control. You can choose All, or select one or more individual vulnerabilities.

Notes:

  • Servers may require restart. Contrast provides a list of servers affected by your selection.

Vulnerability Details

The Details tab is available for specific vulnerabilities for which Contrast captured runtime data flow. If Contrast notices a potential security control or an interesting event, it's shown in the tab as a low severity (green) event. After expanding the details of this event, you can click a button to add a security control.

If you mark a vulnerability as Not A Problem with the reason "Goes through an internal security control", you have the option to define that security control at this time.

In both vulnerability contexts, the Add Security Control dialog gives you the option to immediately create another control in your current location.

API Guidelines

When specifying the API, it's important to consider the following conventions:

  • Java must include method name and parameters. Use fully qualified types, intended to target only java.lang.String parameters (not boolean, int, long, short double, float, etc.).

  • .NET must include return type (or void), method name and parameters. Use fully qualified types, intended to target only System.String parameters.

  • Node must include the function to be marked and the package module name. For individual files in a package, include the file path relative to the application's root directory.

  • Mark the parameters that are going to be validated or sanitized with an asterisk ( ** * **).

Suggested Security Controls

If Contrast recognizes potential security controls, they're automatically populated in a Suggestions section in the Security Controls grid. (You can hide the section by clicking on the caret in the header row.) Suggestions are governed by Enterprise Access Control, which allows a user to see suggestions from applications only if they have a View role or higher.

Contrast names suggested security controls with the class and method; however, you can edit the Name, API and Type fields inline before adding it as an active security control. Hovering over the API gives the name of each application in which it was discovered, which links directly to the Vulnerabilities tab in the application's Details page.

Click the Add icon in the row to accept the suggestion and move it up in the grid as a Rule. Anyone with a Rules_Admin role can then view or edit it. Click the Delete icon to remove the suggestion (with option to Undo it). Contrast doesn't repeat suggestions, so once it's deleted, an API is never suggested again. There is no way to view historical suggestions or get them back.

Notifications

Auto-discovered security controls generate notifications OnEvent in Contrast the very first time they are discovered, regardless of the application. If a control is discovered for an application for which a user doesn't have View role or higher, they won't receive the notification.