Windows Server 2022 Windows Remote Management (WinRM) service must not store RunAs credentials.

STIG ID: WN22-CC-000520  |  SRG: SRG-OS-000373-GPOS-00156 |  Severity: medium |  CCI: CCI-004895,CCI-002038,CCI-002038 |  Vulnerability Id: V-254383 | 

Vulnerability Discussion

Storage of administrative credentials could allow unauthorized access. Disallowing the storage of RunAs credentials for Windows Remote Management will prevent them from being used with plug-ins.

Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Check

If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\WinRM\Service\

Value Name: DisableRunAs

Type: REG_DWORD
Value: 0x00000001 (1)

Fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Remote Management (WinRM) >> WinRM Service >> Disallow WinRM from storing RunAs credentials to "Enabled".
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