Intrusion Prevention

MS.Browser.IERTUTIL.DLL.CStr.Handling.Use.After.Free

Description

This indicates an attack attempt to exploit a Use After Free vulnerability in Microsoft Internet Explorer and Edge.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted HTML file. An attacker can exploit this by tricking an unsuspecting user into visiting a malicious webpage and execute arbitrary code within the context of the application.

Affected Products

Internet Explorer 9
Internet Explorer 10
Internet Explorer 11
Internet Explorer 11 on Windows 10
Microsoft Edge

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor
http://technet.microsoft.com/security/bulletin/MS16-095
http://technet.microsoft.com/security/bulletin/MS16-096

CVE References

CVE-2016-3326