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DLL Hijacking Assessment & Mitigation

Post by Marc Maiffret September 3, 2010

There has been a lot of discussion lately about the older, but newly rediscovered, DLL Hijacking vulnerability. If you are not already familiar with this vulnerability, it allows for system compromise across an unknown number of applications. Specifically, the vulnerability takes advantage of the process of how Microsoft Windows applications load DLL (Dynamic-Link Library) files, which are required for most applications to function properly. Due to the way that Windows loads DLLs by default, it allows for certain scenarios where attackers could load their own DLLs containing malicious backdoor code and related.

Since the DLL Hijacking vulnerability is a logic / design flaw, any number of applications could be affected. This complicates the remediation process for organizations because there is not one simple patch to deploy, but rather many applications that require updates in order to mitigate and prevent this vulnerability.

eEye Vulnerability Management solutions go above and beyond preventing DLL Hijacking by not only assessing vulnerable applications but also preventing attacks against applications where no patch or standard remediation is possible.

For more than a week, eEye customers have had the capability to audit their network for any instances of applications vulnerable to DLL Hijacking using our Retina vulnerability management solutions. Also, eEye customers have been protected from remote attack vectors against known and unknown vulnerable applications through our Blink endpoint security solutions.

If you are not an eEye customer yet, but are interested in finding out more about how to prevent DLL Hijacking in addition to fully protecting your IT environment against ever-evolving security threats, please get to know our powerful vulnerability management solutions. Go to http://www.eeye.com/Retina to find out more!

Further information: http://blog.eeye.com/general/dll-preloading-attacks-in-the-wild

Blink Protection – Protection has been added to rules version 1592 or higher.

Partial List of Retina Vulnerability Management Audits for DLL Hijacking:

  • Apple Safari DLL Preloading Vulnerability (Zero-Day)
  • Microsoft DLL Preloading Vulnerability (Zero-Day) – Groove 2007
  • Microsoft DLL Preloading Vulnerability (Zero-Day) – PowerPoint 2007
  • Mozilla Firefox DLL Preloading Vulnerability (Zero-Day)
  • ++ DLL Preloading Vulnerability (Zero-Day)
  • Opera DLL Preloading Vulnerability (Zero-Day)
  • Microsoft DLL Preloading Vulnerability (Zero-Day) – Movie Maker
  • Microsoft DLL Preloading Vulnerability (Zero-Day) – Office
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