tests/Test-BlockSharedMailboxSignIn.ps1
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function Test-BlockSharedMailboxSignIn { [CmdletBinding()] [OutputType([CISAuditResult])] param ( # Parameters can be added if needed ) begin { # Dot source the class script if necessary #. .\source\Classes\CISAuditResult.ps1 # Initialization code, if needed $recnum = "1.2.2" # Conditions for 1.2.2 (L1) Ensure sign-in to shared mailboxes is blocked # # Validate test for a pass: # - Confirm that the automated test results align with the manual audit steps outlined in the CIS benchmark. # - Specific conditions to check: # - Condition A: No shared mailboxes have the "Sign-in blocked" option disabled in the properties pane on the Microsoft 365 admin center. # - Condition B: Using PowerShell, the `AccountEnabled` property for all shared mailboxes is set to `False`. # # Validate test for a fail: # - Confirm that the failure conditions in the automated test are consistent with the manual audit results. # - Specific conditions to check: # - Condition A: One or more shared mailboxes have the "Sign-in blocked" option enabled in the properties pane on the Microsoft 365 admin center. # - Condition B: Using PowerShell, the `AccountEnabled` property for one or more shared mailboxes is set to `True`. } process { try { # Step: Retrieve shared mailbox details $MBX = Get-EXOMailbox -RecipientTypeDetails SharedMailbox # Step: Retrieve details of shared mailboxes from Azure AD (Condition B: Pass/Fail) $sharedMailboxDetails = $MBX | ForEach-Object { Get-AzureADUser -ObjectId $_.ExternalDirectoryObjectId } # Step: Identify enabled mailboxes (Condition B: Pass/Fail) $enabledMailboxes = $sharedMailboxDetails | Where-Object { $_.AccountEnabled } | ForEach-Object { $_.DisplayName } $allBlocked = $enabledMailboxes.Count -eq 0 # Step: Determine failure reasons based on enabled mailboxes (Condition A & B: Fail) $failureReasons = if (-not $allBlocked) { "Some mailboxes have sign-in enabled: $($enabledMailboxes -join ', ')" } else { "N/A" } # Step: Prepare details for the audit result (Condition A & B: Pass/Fail) $details = if ($allBlocked) { "All shared mailboxes have sign-in blocked." } else { "Enabled Mailboxes: $($enabledMailboxes -join ', ')" } # Step: Create and populate the CISAuditResult object $params = @{ Rec = $recnum Result = $allBlocked # Pass: Condition A, Condition B Status = if ($allBlocked) { "Pass" } else { "Fail" } Details = $details FailureReason = $failureReasons } $auditResult = Initialize-CISAuditResult @params } catch { Write-Error "An error occurred during the test: $_" # Retrieve the description from the test definitions $testDefinition = $script:TestDefinitionsObject | Where-Object { $_.Rec -eq $recnum } $description = if ($testDefinition) { $testDefinition.RecDescription } else { "Description not found" } $script:FailedTests.Add([PSCustomObject]@{ Rec = $recnum; Description = $description; Error = $_ }) # Call Initialize-CISAuditResult with error parameters $auditResult = Initialize-CISAuditResult -Rec $recnum -Failure } } end { # Return the audit result return $auditResult } } |