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Windows 7: Enhanced Mitigation Experience Toolkit (EMET)

26 Dec 2010   #59
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 
Enhanced Mitigation Experience Toolkit (EMET)

information   Information
The...

My System SpecsSystem Spec
01 Aug 2014   #60
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Thank you Loki. Tutorial updated.

My System SpecsSystem Spec
4 Weeks Ago   #61
Tookeri

Windows 7 Pro 32
 
 

EMET 5.0 has some major changes and was not as easy as previous versions to configure. Many apps crashed. I spent a lot of time testing and reading about problems with it. Here's what's good to know:

  • The setting Deep Hooks under Configuration of Apps, has due to compatibility issues always been disabled by default in previous EMET versions. Now it's on by default, but that doesn't mean it'll work on every system
  • EAF isn't compatible with some programs
  • Crashes that don't give alerts from EMET might be caused by the mitigation StackPivot. It's been modified in 5.0, so it might not be compatible for some programs anymore
  • New mitigation ASR blocks certain plug-ins from being loaded, sometimes with exceptions from defined Internet Zones (Trusted Sites, Local Intranet)
  • New mitigation EAF+ blocks some memory read operations commonly used as information leaks
ASR and EAF+ are advanced settings that come predefined for some MS applications when importing settings for the Recommended Software or Popular Software list. There's a bug that if you disable and re-enable any of these two new mitigations, the settings for it is deleted.
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4 Weeks Ago   #62
chrysalis

windows 7 ultimate x64
 
 

Is EMET 4.1 still considered good enough?

With 4.1 I found the ROP protections crash firefox randomly. Also the game 'godus' had issues with EMET and I had to whitelist it (no idea if dev's ever made it compatible as is a game still in development). Apart from that tho seems fine with all my other apps.
My System SpecsSystem Spec
4 Weeks Ago   #63
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Chrysalis,

It would be recommended to update to the latest EMET 5.0 version. You can install it on top of any previous version to update.

I only left EMET 4.1 Update 1 listed since it's the last version that officially supports XP.
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4 Weeks Ago   #64
Tookeri

Windows 7 Pro 32
 
 

Quote   Quote: Originally Posted by chrysalis View Post
Is EMET 4.1 still considered good enough?
Not if you want the best protection. The EMET bypasses reports lately was for 4.1 and to some extent v5 preview:
http://www.offensive-security.com/vu...-toolkit-emet/
Quote   Quote: Originally Posted by Brink View Post
You can install it on top of any previous version to update.
True if you use a fairly recent version. If older than version 3 follow the instructions in the User Guide.
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