Title

The Enhanced Mitigation Experience Toolkit (EMET) system-wide Address Space Layout Randomization (ASLR) must be enabled and configured to Application Opt In. (Cat II impact)

Discussion

Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.

Check Content

This is applicable to unclassified systems, for other systems this is NA. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\EMET\SysSettings\ Value Name: ASLR Type: REG_DWORD Value: 3

Fix Text

This is applicable to unclassified systems, for other systems this is NA. Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> EMET -> "System ASLR" to "Enabled" with "Application Opt-In" selected. The Enhanced Mitigation Experience Toolkit must be installed on the system and the administrative template files added to make this setting available.

Additional Identifiers

Rule ID: SV-49943r5_rule

Vulnerability ID: V-36701

Group Title: WINCC-000078

Expert Comments

CCIs tied to check.

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