Check: WN16-UR-000270
Microsoft Windows Server 2016 STIG:
WN16-UR-000270
(in versions v2 r8 through v1 r8)
Title
The Modify firmware environment values user right must only be assigned to the Administrators group. (Cat II impact)
Discussion
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. Accounts with the "Modify firmware environment values" user right can change hardware configuration environment variables. This could result in hardware failures or a denial of service.
Check Content
Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment. If any accounts or groups other than the following are granted the "Modify firmware environment values" user right, this is a finding. - Administrators For server core installations, run the following command: Secedit /Export /Areas User_Rights /cfg c:\path\filename.txt Review the text file. If any SIDs other than the following are granted the "SeSystemEnvironmentPrivilege" user right, this is a finding. S-1-5-32-544 (Administrators)
Fix Text
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Modify firmware environment values" to include only the following accounts or groups: - Administrators
Additional Identifiers
Rule ID: SV-225087r877392_rule
Vulnerability ID: V-225087
Group Title: SRG-OS-000324-GPOS-00125
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-002235 |
The information system prevents non-privileged users from executing privileged functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures. |
Controls
Number | Title |
---|---|
AC-6 (10) |
Prohibit Non-Privileged Users From Executing Privileged Functions |