Microsoft Internet Explorer 9 suffers from an IEFRAME CMarkup..RemovePointerPos use-after-free vulnerability.
634d8d94a12d60ded007a6b665b6c620bb8e0b39af116a7c06ea2a618e27cd38Since November I have been releasing details on all vulnerabilities I
found that I have not released before. This is the 32nd entry in the
series. This information is available in more detail on my blog at
http://blog.skylined.nl/20161214001.html. There you can find a repro
that triggered this issue in addition to the information below.
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in bitcoin to 183yyxa9s1s1f7JBpAPHPmzAQ346y91Rx5DX.
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MSIE 9 IEFRAME CMarkup..RemovePointerPos use-after-free
=======================================================
(MS13-055, CVE-2013-3143)
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 JavaScript should prevent an attacker
from triggering the vulnerable code path.
Details
-------
This bug was found back when I had very little knowledge and tools to do
analysis on use-after-free bugs, so I have no details to share. ZDI
revealed that this was a use-after-free vulnerability, though their
advisory (at http://www.zerodayinitiative.com/advisories/ZDI-13-163/)
mentions an iframe, which is not in the repro I provided.
Time-line
---------
* Sometime in November 2012: This vulnerability was found through fuzzing.
* 11 November 2012: This vulnerability was submitted to EIP.
* 10 December 2012: This vulnerability was rejected by EIP.
* 12 December 2012: This vulnerability was submitted to ZDI.
* 25 January 2013: This vulnerability was acquired by ZDI.
* 15 February 2013: This vulnerability was disclosed to Microsoft by
ZDI.
* 26 July 2013: This vulnerability was address by Microsoft in MS13-055.
* 14 December 2016: Details of this vulnerability are released.
Cheers,
SkyLined
Repro.html
<!DOCTYPE html>
<html>
<script>
document.addAEventAListener("load", function (){
document.documentAElement.removeANode(true);
}, true);
document.addAEventAListener("DOMNodeARemoved", function (){
document.write("");
}, true);
</script>
<style>
</style>
<span dir="rtl">
<ruby dir="ltr">
<br/>
</ruby>
</span>
</html>
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