Symantec's response (below) is just a little overboard, late, and unbelievable.
McAfee supplied several workarounds to this problem so far...
1. A superDAT.exe that fixes the problem, (executable file that runs a script to restore the deleted file and place the extra.dat file in the McAfee folder to prevent further problem.
2. Downloadable Bootable CD iso image that will boot a computer and fix the problem (like a bootable WinPE disk I think)
3. Instructions to do this from a PXE server to boot a computer and run a script to restore the file
4. instructions to copy the missing file from a working computer.
5. And some other options like restoring the file from quaranteen, or the dllcache folder, etc all documented well enough.
I don't see how Altiris Deploy server could do much of this since (we experienced) the deleted svchost.exe file kills the network connections
Anyway, That would be a nightmare to try and setup an Altiris server to remediate this problem. Sure won't go there again.
And won't go with nearly anything Symantec, their software has failed to work for me too many times.
FYI.. here's the Symantec KB article with steps https://kb.altiris.com/display/1/articleDirect/index.asp?aid=52533
Email I got today...
Subject: Tech Alert: Remediate McAfee Virus Definition Defect
From: Symantec Corporation [symantec_communications-NAM@symantecenterprise.rsys3.com]