Integrate AccessChk.exe with DCM Scripts

The DCM feature supports a powerful way for data discovery by using scripting. By invoking AccessChk.exe from DCM scripts, the output of user rights assignment data from AccessChk.exe can be collected by the DCM scripting data discovery provider. The following procedure enables you to use Microsoft Visual Basic Scripting Edition (VBScript) in combination with the DCM feature to collect data about user rights assignments. To use this procedure, you must have access to a computer running Configuration Manager 2007.

To add a setting using the DCM feature that uses VBScript to collect user rights assignment data

1. In the left pane of the Configuration Manager Console, expand the Desired Configuration Management folder, right-click the folder to access the submenu, and then choose Configuration Item.

2. In the Create Operating System Configuration Item Wizard, choose to create a new operating system configuration item (CI), and then on the Identification tab, name it. For example, you could name it “User Rights Assignment by AccessChk.”

3. Type a description for the CI (optional), and then click Next.

4. On the Microsoft Windows Version page, select or type the corresponding Windows operating system version information, click Next to access the Objects page, and then on this page click Next to access the Settings page.

5. On the Settings page, select the Settings node, click New, and then in the drop-down menu, select Script to invoke the New Script Setting Properties dialog.

6. On the General tab of the New Script Setting Properties dialog, provide a setting Display Name. For example, Remove computer from docking station.

7. Provide Description (optional).

8. For Script Language, select VBScript (or your preferred language if you integrate AccessChk in another language).

9. Copy the VBScript from the next section of this article to the Script text box.

10. Change the second line in the script to the correct input parameters. For example, define the rule for “SeUndockPrivilege,” to “Allowed” in this case. (See the table in the previous section for all available input parameters.)

11. On the Validation tab of New Script Setting Properties dialog, ensure that Data Type is set to String.

12. Click New under the Details list box to create a new validation rule.

13. In the Name and Description fields, provide information for your new validation rule.

14. Ensure that Operator is set to Equals.

15. Defined the Value (account list) that you want to allow or deny for the user rights assignment.

16. Select Severity, and then determine the severity level of the new validation rule.

17. Click OK of New Script Setting Properties dialog to save the new setting

18. Click Finish button in Settings tab to Summary page.

19. Click Next after review the summary

20. Click Finish in Confirmation page.

Sample DCM Feature VBScript for User Rights Assignments

Here is a VBScript that you can use with the DCM feature to obtain user rights assignments:

option explicit

WScript.Echo ValidateSetting("SeNetworkLogonRight", "Allowed", "Administrators,Authenticated Users")

'WScript.Echo ValidateSetting("SeDenyBatchLogonRight", "Denied", "Authenticated Users")

Function ValidateSetting(userRightProperty, SeType, baselineValue)

    on error resume next

    ' Get expected values and actual valuse we are testing against

    Dim ExpectedValues, ActualValues

    ExpectedValues = baselineValue

    ' Poll LSA data through accesschk

    ActualValues = PollAccessChkForSettings (userRightProperty)

    If ActualValues = "" Then

    ' below line assumes DCM rule value (OperandA) is "NO ONE" if no one is allowed for the user right privilege

        ActualValues = "NO ONE"

    End If

    ' do our validation

    If SeType = "Allowed" Then

        ValidateSetting = ValidateAllowedResults(ExpectedValues, ActualValues)

    Else

        ValidateSetting = ValidateDeniedResults(ExpectedValues, ActualValues)

    End If

    ' do error checking, make sure our function return something.

    If ValidateSetting = "" Then

        ValidateSetting = "ValidateSetting return Nothing or Empty"

        If Err.Number <> 0 Then

            ValidateSetting = ValidateSetting & ", Error: " & Err.Number

            ValidateSetting = ValidateSetting & ", Error (Hex): " & Hex(Err.Number)

            ValidateSetting = ValidateSetting & ", Source: " & Err.Source

            ValidateSetting = ValidateSetting & ", Description: " & Err.Description

            Err.Clear

        End If

    End If

End Function

' Validate allowed results

Function ValidateAllowedResults(ExpectedValues, ActualValues)

    on error resume next

    ' We are always in compliant if no one has the privilege

    If UCase(Trim(ActualValues)) = "NO ONE" Then

        ValidateAllowedResults = ExpectedValues

        Exit Function

    End If

    ' Everify that the actual list of users is a sub-set of the expected list of users.

    Dim ActualValueList, ExpectedValueList, ActualValue, ExpectedValue, Result

    ActualValueList = Split(UCase(ActualValues), ",")

    ExpectedValueList = Split(UCase(ExpectedValues), ",")

    ' Verify all the actual users are in the list of expected users

    For Each ActualValue in ActualValueList

        ' Find if actual value is in list of expected values

        Result = false

        For Each ExpectedValue in ExpectedValueList

            If Trim(ActualValue) = Trim(ExpectedValue) Then

                Result = true

                Exit For

            End If

        Next

        If Result = false Then

            ValidateAllowedResults = ActualValues

            Exit Function

        End If

    Next

    ' Passsed all tests

    ValidateAllowedResults = ExpectedValues

End Function

' Validate denied results

Function ValidateDeniedResults(ExpectedValues, ActualValues)

    on error resume next

    ' We are always in compliant if expected no one has been denied the privilege

    If UCase(Trim(ExpectedValues)) = "NO ONE" Then

        ValidateDeniedResults = ExpectedValues

        Exit Function

    End If

    ' We are always not in compliant if no one has been denied the privilege but expected someones.

    If UCase(Trim(ActualValues)) = "NO ONE" Then

        ValidateDeniedResults = ActualValues

        Exit Function

    End If

    ' Everify that the expected list of users is a sub-set of the actual list of users.

    Dim ActualValueList, ExpectedValueList, ActualValue, ExpectedValue, Result

    ActualValueList = Split(UCase(ActualValues), ",")

    ExpectedValueList = Split(UCase(ExpectedValues), ",")

    ' Verify all the expected users are in the list of actual users

   For Each ExpectedValue in ExpectedValueList

        ' Find if expected value is in list of actual values

        Result = false

        For Each ActualValue in ActualValueList

            If Trim(ActualValue) = Trim(ExpectedValue) Then

                Result = true

                Exit For

            End If

        Next

        If Result = false Then

            ValidateDeniedResults = ActualValues

            Exit Function

        End If

    Next

    ' Passsed all tests

    ValidateDeniedResults = ExpectedValues

End Function

' Set ActualValues to a comma deliminated list of values defined by what settings we are polling.

Function PollAccessChkForSettings(userRightProperty)

    on error resume next

    Dim Result, timeout, accountArray, objWshell, oExec

    Set objWshell = WScript.CreateObject("WScript.Shell")

    Set oExec = objWshell.Exec("accesschk.exe -a " & userRightProperty)

    If oExec is Nothing Then

        PollAccessChkForSettings = "ERROR: objWshell.Exec return null, please check if accesschk.exe exists."

        Exit Function

    End if

    ' Wait for program to finish

    timeout = 200

    Do While oExec.Status = 0 And timeout > 0

        WScript.Sleep 10

        timeout = timeout - 1

    Loop

    If oExec.Status = 0 Then

        PollAccessChkForSettings = "ERROR: Timed Out"

        Exit Function

    Else

        Result = oExec.StdOut.ReadAll

        If Result = "" Then

            PollAccessChkForSettings = "ERROR: Get Data Failed"

            Exit Function

        Else

            ' not found any valid data

            If InStr(Result, "No more data is available") > 0 Then

                PollAccessChkForSettings = ""

                Exit Function

            End If

            ' concat the account to a string with comma delimiter

            Dim i, value

            accountArray = Split(Result, vbCrlf)

            For i = 0 To UBound(accountArray) - 1

                If PollAccessChkForSettings <> "" Then

                    PollAccessChkForSettings = PollAccessChkForSettings + ","

                End If

                value = Replace(accountArray(i), Chr(9), "")

                value = Trim(value)

                Dim j

                j = InStrRev(value, "\")

                If j = 0 Then

                    PollAccessChkForSettings = PollAccessChkForSettings + UCase(value)

                Else

                    PollAccessChkForSettings = PollAccessChkForSettings + UCase(Right(value, Len(value) - j))

                End if

            Next

            'WScript.Echo PollAccessChkForSettings

        End If

    End If

End Function

If you are intrested in the complete script listing for DCM you can download it from HERE

To improve accuracy/integrity of Security Compliance Management collecting user rights assignment data from the right location is critical for security compliance reports. Newly updated AccessChk.exe can be integrated into Desired Configuration Management feature of Microsoft Configuration Manager 2007 to achieve the purpose.

Comments

• Anonymous
  November 22, 2009
  Hi, I tried to access the URL which contains many DCM scripts, but failed, could you please provide the new link or send the script to me?