Earlier in the week we shared some information we had regarding an Important Microsoft Update on ADFS Vulnerability.  We have a Microsoft Bulletin Update on ADFS  to share based on this source.

Why was this bulletin rereleased on August 19, 2013?

Microsoft rereleased this bulletin to announce the reoffering of the 2843638 update for Active Directory Federation Services 2.0 on Windows Server 2008 and Windows Server 2008 R2. The rereleased update addresses an issue in the original offerings that caused AD FS to stop working if the previously released RU3 rollup QFE (update 2790338) had not been installed; the rerelease removes this requirement. Furthermore, in creating this rerelease, Microsoft has consolidated the fixes contained in the two original updates (2843638 and 2843639) into a single 2843638 update. Customers who already installed the original updates will be reoffered the 2843638 update and are encouraged to apply it at the earliest opportunity. Note that when the installation is complete, customers will see only the 2843638 update in the list of installed updates.