Title

The Enhanced Mitigation Experience Toolkit (EMET) system-wide Data Execution Prevention (DEP) must be enabled and configured to at least Application Opt Out. (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) on the system and applications adding additional levels of protection.

Check Content

This is applicable to unclassified systems, for other systems this is NA. Open EMET in Programs\Enhanced Mitigation Experience Toolkit. Verify under System Status that Data Execution Prevention (DEP) is configured to "Application Opt Out". Alternately verify in System Properties. Select "System" in Control Panel. Select the "Advanced" tab. Click "Settings" in the "Performance" section. Select the "Data Execution Prevention" tab. Verify "Turn on DEP for all programs and services except those I select:" is selected. If DEP is not configured as specified, this is a finding. Applications that do not function properly due to this setting, and are opted out, must be documented with the ISSO.

Fix Text

This is applicable to unclassified systems, for other systems this is NA. Open EMET in Programs\Enhanced Mitigation Experience Toolkit. Configure Data Execution Prevention (DEP) under System Status to "Application Opt Out". The Enhanced Mitigation Experience Toolkit must be installed on the system to make this setting available. Document applications that do not function properly due to this setting, and are opted out, with the ISSO. Alternately configure in System Properties. Select "System" in Control Panel. Select the "Advanced" tab. Click "Settings" in the "Performance" section. Select the "Data Execution Prevention" tab. Select "Turn on DEP for all programs and services except those I select:". Applications that are opted out are configured in the window below this selection.

Additional Identifiers

Rule ID: SV-50505r4_rule

Vulnerability ID: V-36705

Group Title:

Expert Comments

CCIs tied to check.

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