STIGQter: STIG Summary: Microsoft Office 365 ProPlus Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 23 Apr 2021:

The Publish to Global Address List (GAL) button must be disabled in Outlook.

DISA Rule

SV-223355r508019_rule

Vulnerability Number

V-223355

Group Title

SRG-APP-000516

Rule Version

O365-OU-000010

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.

Weight

10

Fix Recommendation

Set the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Security >> Cryptography >> Do not display 'Publish to GAL' button to "Enabled".

Check Contents

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Security >> Cryptography >> Do not display 'Publish to GAL' button is set to "Enabled".

Use the Windows Registry to navigate to the following key:

HKCU\software\policies\microsoft\office\16.0\ outlook\security

If the value for publishtogaldisabled is REG_DWORD = 1, this is not a finding.

Vulnerability Number

V-223355

Documentable

False

Rule Version

O365-OU-000010

Severity Override Guidance

Verify the policy value for User Configuration >> Administrative Templates >> Microsoft Outlook 2016 >> Security >> Cryptography >> Do not display 'Publish to GAL' button is set to "Enabled".

Use the Windows Registry to navigate to the following key:

HKCU\software\policies\microsoft\office\16.0\ outlook\security

If the value for publishtogaldisabled is REG_DWORD = 1, this is not a finding.

Check Content Reference

M

Target Key

4099

Comments