McAfee SaaS MyAsUtil126.96.36.1993.dll SecureObjectFactory Instantiation Design Flaw Remote Code Execution VulnerabilityTPTI-11-12: August 8th, 2011
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11562. For further product information on the TippingPoint IPS:
Vulnerability DetailsThis 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 MyAsUtil188.8.131.523.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 ResponseMcAfee has issued an update to correct this vulnerability. More details can be found at:
2011-01-24 - Vulnerability reported to vendor
2011-08-08 - Coordinated public release of advisory