Check: WN12-SO-000031
Microsoft Windows Server 2012/2012 R2 Domain Controller STIG:
WN12-SO-000031
(in versions v3 r7 through v2 r7)
Title
The amount of idle time required before suspending a session must be properly set. (Cat III impact)
Discussion
Open sessions can increase the avenues of attack on a system. This setting is used to control when a computer disconnects an inactive SMB session. If client activity resumes, the session is automatically reestablished. This protects critical and sensitive network data from exposure to unauthorized personnel with physical access to the computer.
Check Content
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: \SYSTEM\CurrentControlSet\Services\LanManServer\Parameters\ Value Name: autodisconnect Value Type: REG_DWORD Value: 0x0000000f (15) (or less)
Fix Text
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Microsoft Network Server: Amount of idle time required before suspending session" to "15" minutes or less.
Additional Identifiers
Rule ID: SV-226296r852140_rule
Vulnerability ID: V-226296
Group Title: SRG-OS-000163-GPOS-00072
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-001133 |
The information system terminates the network connection associated with a communications session at the end of the session or after an organization-defined time period of inactivity. |
| CCI-002361 |
The information system automatically terminates a user session after organization-defined conditions or trigger events requiring session disconnect. |