Title

Terminal Services is configured to use a common temporary folder for all sessions. (Cat II impact)

Discussion

This setting, which is located under the Temporary Folders section of the Terminal Services configuration option, controls the use of per session temporary folders or of a communal temporary folder. If this setting is enabled, only one temporary folder is used for all terminal services sessions. If a communal temporary folder is used, it might be possible for users to access other users temporary folders.

Check Content

If the following registry value doesn’t exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: PerSessionTempDir Type: REG_DWORD Value: 1

Fix Text

2008/Vista - Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services -> Terminal Server -> Temporary Folders “Do Not Use Temp Folders per Session” will be set to “Disabled”.

Additional Identifiers

Rule ID: SV-16954r1_rule

Vulnerability ID: V-3455

Group Title: TS/RDS - Do Not Use Temp Folders

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.