Check: O365-CO-000014
Microsoft Office 365 ProPlus STIG:
O365-CO-000014
(in versions v2 r12 through v1 r1)
Title
Add-on Management must be enabled for all Office 365 ProPlus programs. (Cat II impact)
Discussion
Internet Explorer add-ons are pieces of code, run in Internet Explorer, to provide additional functionality. Rogue add-ons may contain viruses or other malicious code. Disabling or not configuring this setting could allow malicious code or users to become active on user computers or the network. For example, a malicious user can monitor and then use keystrokes that user's type into Internet Explorer. Even legitimate add-ons may demand resources, compromising the performance of Internet Explorer and the operating systems for user computers.
Check Content
Verify the policy value for Computer Configuration >> Administrative Templates >> Microsoft Office 2016 (Machine) >> Security Settings >> IE Security "Add-on Management" is set to "Enabled" and the check box is selected for every installed Office program. Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_ADDON_MANAGEMENT If the value for each installed Office Program is REG_DWORD = 1, this is not a finding.
Fix Text
Set the policy value for Computer Configuration >> Administrative Templates >> Microsoft Office 2016 (Machine) >> Security Settings >> IE Security "Add-on Management" to "Enabled" and select the check boxes for all installed Office programs.
Additional Identifiers
Rule ID: SV-223296r879628_rule
Vulnerability ID: V-223296
Group Title: SRG-APP-000207
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-001662 |
The information system takes organization-defined corrective action when organization-defined unacceptable mobile code is identified. |
Controls
Number | Title |
---|---|
SC-18 (1) |
Identify Unacceptable Code / Take Corrective Actions |