Internet Explorer CTagFactory Use-After-Free Remote Code Execution VulnerabilityZDI-12-066: April 18th, 2012
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This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.
The specific issue is due to the process re-using a freed CTagFactory object. This can be made to occur by creating a specially crafted t:media element and later removing it. Remote attackers can abuse this to achieve arbitrary code execution under the context of the user running the browser.
Vendor ResponseMicrosoft has issued an update to correct this vulnerability. More details can be found at:
2011-12-19 - Vulnerability reported to vendor
2012-04-18 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: