Microsoft Internet Explorer GetReplacedUrlImgCtxCookie Out-of-bounds Indexing Remote Code Execution Vulnerability

2014-11-19T00:00:00
ID ZDI-14-379
Type zdi
Reporter Jason Kratzer
Modified 2014-11-09T00:00:00

Description

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 handling of arguments passed to the GetReplacedUrlImgCtxCookie function. By manipulating a document's elements an attacker can access data outside the bounds of an allocated buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.