BeyondTrust

Security in Context: The BeyondTrust Blog

Welcome to Security in Context

Bringing you news and commentary on solutions and strategies for protecting critical IT infrastructure in the context of your business.

EMET 4.0: Adding a Layer to the Security Onion

Posted June 19, 2013    BeyondTrust Research Team

With the release of the EMET 4.0 beta back in April, it’s no surprise that there has been a lot of buzz lately around Microsoft’s Enhanced Mitigation Experience Toolkit (EMET). Now, after some delay, the beta testing is over and the brand new, and very shiny, EMET v4 has been released.

The latest version of EMET introduces several features that address many of the techniques used in high profile attacks over the last few years. Features such as “Certificate Trust” allow users to configure a custom set of rules for implementing Certificate Pinning for various SSL certificates. This helps prevents man-in-the-middle (MitM) attacks that take advantage of the shortcomings of the SSL, which have gained quite a bit of attention in the past few years, with incidents such as the DigiNotar fiasco.

Additionally, several memory protection enhancements were added for the purpose of proactively detecting exploitation of both known and unknown vulnerabilities. These protection mechanisms primarily center on detection and prevention of ROP-based exploits. Using these memory protection enhancements, EMET is even able to detect and prevent an ASLR/DEP bypass that was shown off at this year’s CanSecWest security conference.

EMET can be put into an “Audit mode” that will stop it from blocking offending processes, and instead report when a rule is triggered. This allows for compatibility testing before mass deployment and makes it much more realistic to be used as a reporting device if active blocking is too severe for a specific workstation. After rules are developed, EMET can be pushed out and managed through Group Policy.

As with any mitigation or protection mechanism, there is usually going to be some technique that bypasses the defense. After all, this is a never-ending struggle in a fight to secure highly valuable data. However, this does add on an additional layer that attackers will need to plan for and attempt to bypass. It becomes especially valuable in situations where legacy software is involved, when uninstalling just isn’t an option. In order to help secure your environment, we recommend that you at least test out EMET, and if it works for you, get it deployed as soon as possible. In order to help with the process, you can use your trusty Retina Network Security Scanner (audit ID 19247 & 19248) to locate machines on your network that do not yet have EMET deployed on them.

Tags:
, ,

Leave a Reply

Additional articles

darren-mar-elia

BeyondTrust Webcast: Darren Mar-Elia’s 4 Active Directory Change Scenarios to Track

Posted August 20, 2014    Chris Burd

In our latest webcast, we joined Darren Mar-Elia, CTO at SDM Software, to discuss best practices for Active Directory (AD) change management. Here are some key takeaways from the presentation, followed by a link to a full-length video of the presentation. Mar-Elia kicks things off with a critical insight: that the best AD change management…

Tags:
, , , , , , ,
normal-blog-img

New IT Security Best Practices for Maintaining “Business as Usual” Despite Evolving Threats

Posted August 13, 2014    Morey Haber

It’s time to get back to business. Here in the U.S., summer vacations are wrapping up and businesses are looking forward to closing out 2014. Over the past year, we’ve seen several incidents that warrant changes in the ways consumers make purchases and businesses conduct transactions. Consider last week’s theft of a whopping 1.2 billion…

Tags:
, , ,

Retina Vulnerability Audits – August 2014 Patch Tuesday

Posted August 12, 2014    BeyondTrust Research Team

The following is a list of Retina vulnerability audits for this August 2014 Patch Tuesday: MS14-043 - Vulnerability in Windows Media Center Could Allow Remote Code Execution (2978742) 34924 – Microsoft WMC Remote Code Execution (2978742) MS14-044 - Vulnerabilities in SQL Server Could Allow Elevation of Privilege (2984340) 34915 – Microsoft SQL Server Multiple Vulnerabilities (2984340) – 2008 34916 –…