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McAfee SaaS MyAsUtil5.2.0.603.dll SecureObjectFactory Instantiation Design Flaw Remote Code Execution Vulnerability

TPTI-11-12: August 8th, 2011


Affected Vendors


Affected Products


TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11562. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of McAfee Security-as-a-Service. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaws exist within the MyAsUtil5.2.0.603.dll which exposes an ActiveX control. First, XSS can be used to bypass the domain execution policy implemented in MyASUtil.SecureObjectFactory.CreateSecureObject() to create an instance of MyASUtil.InstallInfo. Then, MyASUtil.InstallInfo.RunUserProgram() can be used to execute code on the user's system. Additionally, many other objects and interfaces on the user's system can likely be abused using this general mechanism.

Vendor Response

McAfee has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2011-01-24 - Vulnerability reported to vendor
    2011-08-08 - Coordinated public release of advisory


This vulnerability was discovered by: