Title

Do not provide Continue Option on Encryption Warning dialog box - Outlook. (Cat II impact)

Discussion

By default, if Outlook 2007 users see an encryption-related dialog box when attempting to send a message, they can choose to dismiss the warning and send the message anyway. If users send messages after seeing an encryption error, it is likely that recipients will not be able to read them.

Check Content

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Outlook 2007 -> Security -> Cryptography “Do not provide Continue option on Encryption warning dialog boxes” will be set to “Disabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\12.0\Outlook\Security Criteria: If the value DisableContinueEncryption is REG_DWORD = 0, this is not a finding.

Fix Text

The policy value for User Configuration -> Administrative Templates -> Microsoft Office Outlook 2007 -> Security -> Cryptography “Do not provide Continue option on Encryption warning dialog boxes” will be set to “Disabled”.

Additional Identifiers

Rule ID: SV-18735r1_rule

Vulnerability ID: V-17604

Group Title:

Expert Comments

CCIs tied to check.

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