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Security in Context: The BeyondTrust Blog

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

Internet Explorer 8 0day

Posted May 6, 2013    BeyondTrust Research Team

Last week, news broke that the U.S. Department of Labor’s (DoL) website was compromised… and that it had been serving up Internet Explorer 0day to its visitors. This 0day, CVE-2013-1347 (Retina Audit 19041 – Microsoft Internet Explorer 8 Remote Code Execution Vulnerability (Zero-Day)), only affects Internet Explorer 8 on Windows XP, Vista, and Windows 7 (as well as Server 2003, 2008, and 2008 R2). However, the exploit used on the U.S. Department of Labor website only targeted Windows XP machines. Here’s what else you need to know:

Metasploit module available, targeting Windows XP, Server 2003, Vista, and Windows 7 (PowerBroker Endpoint Protection Platform detects and defeats this module)

• Blocking/disabling Active Scripting in both Internet and intranet zones mitigates exploitation

• Highly likely this vulnerability will be used by exploit packs in the immediate future

• Vulnerability based on reliable use-after-free condition (mshtml!CGenericElement)

• Grants arbitrary code execution within the context of the currently logged on user (least privilege environment, anyone?)

So what can you do right now to protect your organization? If possible, use another browser like Chrome or Firefox, disable Active Scripting if you still have to use IE8, do not run as Administrator, and finally, upgrade – Internet Explorer 9 and 10 are not vulnerable to this issue.

Update 5-9-2013: Microsoft has released a Fix it for this 0day.

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Additional articles

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Protecting Privileged Passwords: a “Past the Password” Perspective

Posted July 6, 2015    Nick Cavalancia

Webinar discussing the realities of today’s state of security using some of the most recent (and respected) reports in the industry, and look at what steps you should be taking to properly protect your privileged passwords.

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On Demand Webinar: Because Auditing Stinks Sometimes

Posted July 2, 2015    Lindsay Marsh

Auditing stinks. Well, mostly stinks. In this on demand webinar, lead by Group Policy MVP Jeremy Moskowitz, you’ll learn the three key tenets to real Group Policy auditing. Tenet 1: Why do you care about Group Policy auditing? Tenet 2: How does Eventing help you know “Who did what?” Tenet 3: How does Reporting tell…

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Stopping the Skeleton Key Trojan

Posted June 29, 2015    Robert Auch

Earlier this year Dell’s SecureWorks published an analysis of a malware they named “Skeleton Key”. This malware bypasses authentication for Active Directory users who have single-factor (password only) authentication. The “Skeleton Key” attack as documented by the SecureWorks CTU relies on several critical parts.

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