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From Crash to Exploit: CVE-2015-6086 - Out of Bound Read/ASLR Bypass

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$$ |       \$$\$$  / $$  __|\______|$$  ____/ $$ \$$$$ |  $$ | \_____$$\\______|$$  __$$\ $$ \$$$$ |$$  __$$<
$$ |  $$\   \$$$  /  $$ |           $$ |      $$ |\$$$ |  $$ | $$\   $$ |       $$ /  $$ |$$ |\$$$ |$$ /  $$ |
\$$$$$$  |   \$  /   $$$$$$$$\      $$$$$$$$\ \$$$$$$  /$$$$$$\\$$$$$$  |        $$$$$$  |\$$$$$$  /\$$$$$$  |
 \______/     \_/    \________|     \________| \______/ \______|\______/         \______/  \______/  \______/

Copyright 2016 © Payatu Technologies Pvt. Ltd.

Improper handling of new line and white space character caused Out of Bound Read in CDOMStringDataList::InitFromString. This flaw can be used to leak the base address of MSHTML.DLL and effectively bypass Address Space Layout Randomization.

Affected Version

  • Internet Explorer 9
  • Internet Explorer 10
  • Internet Explorer 11

Test Bed

  • IE: 10 & 11
  • KB: KB3087038
  • OS: Windows 7 SP1 x86

Advisory

Blog Post

http://www.payatu.com/from-crash-to-exploit/

Author

Ashfaq Ansari

ashfaq[at]payatu[dot]com

@HackSysTeam | Blog | null

Payatu Technologies

http://www.payatu.com/

Workshop Conducted


http://hacksys.vfreaks.com

HackSys Team

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