1.255 WN11-UR-000110

Information

The 'Impersonate a client after authentication' user right must only be assigned to Administrators, Service, Local Service, and Network Service.

GROUP ID: V-253498
RULE ID: SV-253498r1138526

Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities.

The 'Impersonate a client after authentication' user right allows a program to impersonate another user or account to run on their behalf. An attacker could potentially use this to elevate privileges.

Solution

Configure the policy value for

Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> 'Impersonate a client after authentication'

to only include the following groups or accounts:

Administrators
LOCAL SERVICE
NETWORK SERVICE
RESTRICTED SERVICES\PrintSpoolerService
SERVICE

See Also

https://workbench.cisecurity.org/benchmarks/27756