CCE-15112-6| Platform: cpe:/o:microsoft:windows_10 | Date: (C)2022-11-15 (M)2023-07-04 |
Windows PowerShell 5.0 added advanced logging features which can provide additional detail when malware has been run on a system. Disabling the Windows PowerShell 2.0 mitigates against a downgrade attack that evades the Windows PowerShell 5.0 script block logging feature.
Fix:
Disable "Windows PowerShell 2.0" on the system.
Run "Windows PowerShell" with elevated privileges (run as administrator).
Enter the following:
Disable-WindowsOptionalFeature -Online -FeatureName MicrosoftWindowsPowerShellV2Root
This command should disable both "MicrosoftWindowsPowerShellV2Root" and "MicrosoftWindowsPowerShellV2" which correspond to "Windows PowerShell 2.0" and "Windows PowerShell 2.0 Engine" respectively in "Turn Windows features on or off".
Alternately:
Search for "Features".
Select "Turn Windows features on or off".
De-select "Windows PowerShell 2.0".
Parameter:
[yes/no]
Technical Mechanism:
Disable "Windows PowerShell 2.0" on the system.
Run "Windows PowerShell" with elevated privileges (run as administrator).
Enter the following:
Disable-WindowsOptionalFeature -Online -FeatureName MicrosoftWindowsPowerShellV2Root
This command should disable both "MicrosoftWindowsPowerShellV2Root" and "MicrosoftWindowsPowerShellV2" which correspond to "Windows PowerShell 2.0" and "Windows PowerShell 2.0 Engine" respectively in "Turn Windows features on or off".
Alternately:
Search for "Features".
Select "Turn Windows features on or off".
De-select "Windows PowerShell 2.0".
| CCSS Severity: | CCSS Metrics: |
| CCSS Score : 7.7 | Attack Vector: NETWORK |
| Exploit Score: 2.2 | Attack Complexity: HIGH |
| Impact Score: 5.5 | Privileges Required: NONE |
| Severity: HIGH | User Interaction: NONE |
| Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L | Scope: UNCHANGED |
| | Confidentiality: HIGH |
| | Integrity: HIGH |
| | Availability: LOW |
| | |
References: | Resource Id | Reference |
|---|
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:85529 |
