A RBAC role assignee can unexpectedly run the Add-MailboxPermission command or the Remove-MailboxPermission command on an Exchange Server 2010 server that is outside the role assignment scope

Symptoms

Consider the following scenario:
  • You create a management role assignment in a Microsoft Exchange Server 2010 environment.
  • You assign the Mail Recipients role to a role assignee.
  • You define the scope of the role assignment to an organizational unit.
  • The role assignee tries to run the Add-MailboxPermission command or the Remove-MailboxPermission command on an Exchange Server 2010 server that is outside the role assignment scope.
In this scenario, the role assignee can unexpectedly run the Add-MailboxPermission command or the Remove-MailboxPermission command on the server.

Cause

This issue occurs because there is no Role Based Access Control (RBAC) verification when Exchange Server 2010 runs the Add-MailboxPermission command or the Remove-MailboxPermission command.

Resolution

To resolve this issue, install the following update rollup:
2608646 Description of Update Rollup 6 for Exchange Server 2010 Service Pack 1

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about the Add-MailboxPermission command, visit the following Microsoft website:For more information about the Remove-MailboxPermission command, visit the following Microsoft website:For more information about the New-ManagementRoleAssignment command, visit the following Microsoft website: For more information about management role assignments, visit the following Microsoft website:
Properties

Article ID: 2549289 - Last Review: Oct 28, 2011 - Revision: 1

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