Retrieving of CRL data must be set for online action.

From Microsoft Outlook 2010 STIG

Part of DTOO267 - Retrieving CRLs - Outlook

Associated with: CCI-000185

SV-33880r1_rule Retrieving of CRL data must be set for online action.

Vulnerability discussion

This policy setting controls how Outlook retrieves Certificate Revocation Lists to verify the validity of certificates. Certificate revocation lists (CRLs) are lists of digital certificates that have been revoked by their controlling certificate authorities (CAs), typically because the certificates were issued improperly or their associated private keys were compromised.

Check content

The policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Cryptography -> Signature Status dialog box “Retrieving CRLs (Certificate Revocation Lists)” must be “Enabled (When online always retrieve the CRL)”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\14.0\outlook\security Criteria: If the value UseCRLChasing is REG_DWORD = 1, this is not a finding.

Fix text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2010 -> Security -> Cryptography -> Signature Status dialog box “Retrieving CRLs (Certificate Revocation Lists)” to “Enabled (When online always retrieve the CRL)”.

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