Title

The Ctrl+Alt+Del security attention sequence for logons must be enabled. (Cat II impact)

Discussion

Disabling the Ctrl+Alt+Del security attention sequence can compromise system security. Because only Windows responds to the Ctrl+Alt+Del security sequence, you can be assured that any passwords you enter following that sequence are sent only to Windows. If you eliminate the sequence requirement, malicious programs can request and receive your Windows password. Disabling this sequence also suppresses a custom logon banner.

Check Content

Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.) Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for "Interactive Logon: Do not require CTRL+ALT+DEL" is not set to "Disabled", this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: DisableCAD Value Type: REG_DWORD Value: 0

Fix Text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Interactive Logon: Do not require CTRL+ALT+DEL" to "Disabled".

Additional Identifiers

Rule ID: SV-48049r1_rule

Vulnerability ID: V-1154

Group Title: Ctrl+Alt+Del Security Attention Sequence

Expert Comments

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