I don’t know about your family, but at our house we look forward with giddy anticipation for Patch Tuesday. The kids get all dressed up in their best patched clothes and we all sit huddled around the laptop feverously hitting F5 on the SharePoint patches page to see if something new comes out. We were not disappointed today. Microsoft patch MS12-050 includes among other things, a critical security patch for SharePoint 2010. This patches an elevation of privilege exploit. This patch is pretty important and you should probably get it on your SharePoint servers as soon as is responsible. Test it if you can in your test environment first.
The patch will install automatically as part of Windows Update. So be careful if you just blindly approve patches in WSUS or if you let Windows Update just update your servers. By looking at the build numbers of the files included it looks like it fits after SP1, but before the rerelease of the April 2012 CU. If you have the April 2012 CU or June 2012 CU I don’t believe you need this patch. The fixes are already installed. If you do not have SP1 installed already you’ll need to install it before you can install this patch. After this patch is installed you’ll need to run the Configuration Wizard on all the boxes in your farm to finalize its installation.
As always you can look at http://www.toddklindt.com/sp2010builds to see which patch level your farm is at.
If you have any questions, let me know.