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.

Land of the Rising IE 0day

Posted September 17, 2013    BeyondTrust Research Team

A new Internet Explorer zeroday has surfaced that affects every supported version of Internet Explorer. It has been observed in the wild in targeted attacks in Japan. Current attacks are focusing on exploiting Internet Explorer 8 and 9 on Windows XP and 7 machines.

This is a use-after-free vulnerability in mshtml.dll, which is a DLL used by Windows to present HTML content to the user. The current exploitation vector relies on an extremely common Microsoft Office DLL, hxds.dll, which was compiled without address space layout randomization (ASLR) support. Attackers use DLLs like this to be able to more easily exploit a system, allowing them to execute arbitrary code at will.

To help mitigate this vulnerability, Microsoft has released a Fix it, which can be found here. Additionally, EMET 4.0 can be used to mitigate this vulnerability, as well as others.

Because the Fix it has been released, as well as a detailed blog post by Microsoft discussing the vulnerability, attackers will be able to deduce where the vulnerability lies, which greatly increases the likelihood of seeing this vulnerability exploited in areas outside of Japan. We expect to see this vulnerability incorporated into exploit frameworks in the near future.

The exploitation of this vulnerability is mitigated by built-in memory protections utilized by PowerBroker Endpoint Protection Platform, and is detected by Retina in the following audits:
30541 – Microsoft Internet Explorer MSHTML NULL_IMPORT_DESCRIPTOR (Zero-Day)
30542 – Microsoft Internet Explorer MSHTML NULL_IMPORT_DESCRIPTOR (Zero-Day) – x64

Tags:
,

Leave a Reply

Additional articles

PowerBroker Password Safe Password Age Report

Reshaping Privileged Password Management with Password Safe 5.2

Posted July 21, 2014    Martin Cannard

Today, we’re pleased to unveil the latest edition of our privileged password management solution, PowerBroker Password Safe. I’ll start with a brief intro of what’s new and then tell you a little about the driving factors behind Password Safe development. New features for mitigating password risk and ensuring accountability enterprise-wide Here’s the 10,000-foot overview of…

Tags:
, , ,
PowerBroker for Windows tamper protection

PowerBroker for Windows 6.6 Tamper Protection

Posted July 18, 2014    Morey Haber

I have a bone to pick: Stopping an administrator from performing an action on a system is futile endeavor. As an administrator, there is always a way to circumvent a solution’s from tampered protection. Really! By default, Windows administrators have unrestricted access to the system – and even though an application, hardened configuration, or group policy…

Tags:
, ,
PowerBroker for Windows can be configured to automatically identify the end user’s language preference

Implementing Least Privilege Around the World with PowerBroker for Windows

Posted July 17, 2014    Morey Haber

BeyondTrust recognizes that international, multilingual businesses have unique operating challenges, especially when it comes to implementing enterprise software. PowerBroker for Windows is a least-privilege solution often deployed across thousands of systems spanning multiple geographies and protecting users of diverse backgrounds. Earlier this year, PowerBroker for Windows introduces new data privacy features for EMEA and APAC,…

Tags:
, ,