Microsoft Internet Explorer swapNode Handling Remote Code Execution VulnerabilityZDI-11-289: October 15th, 2011
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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 or open a malicious file.
The specific flaw exists within the way Internet Explorer handles calls to the method swapNode(). When a call to swapNode is issued on an node within a document that has two body nodes, Internet Explorer frees an attribute field for one of the body nodes and then later re-uses the freed field during the node swap. This behavior could result in remote code execution under the context of the current user.
Vendor ResponseMicrosoft has issued an update to correct this vulnerability. More details can be found at:
2011-07-20 - Vulnerability reported to vendor
2011-10-15 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Sebastian Apelt (www.siberas.de)