Check e-mail addresses against addresses of certificates being used must be disallowed.
An XCCDF Rule
Description
<VulnDiscussion>This policy setting controls whether Outlook verifies the user's e-mail address with the address associated with the certificate used for signing. If you enable this policy setting, users can send messages signed with certificates that do not match their e-mail addresses. If you disable or do not configure this policy setting, Outlook verifies that the user's e-mail address matches the certificate being used for signing.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-228476r508021_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Set the policy value for User Configuration -> Administrative Templates -> Microsoft Outlook 2016 -> Security -> Cryptography "Do not check e-mail address against address of certificates being used" to "Enabled".