full-disclosure - Flash JIT and spraying info leak gadgets

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <CAHCxs98mWnUWcN_JKa3turn7=NM68KbrneaHfbBfKwxMPY1CQw@mail.gmail.com>
Date: Fri, 19 Jul 2013 12:52:41 -0700
From: Fermín J. Serna <fjserna@...il.com>
To: dailydave@...ts.immunityinc.com, full-disclosure@...ts.grok.org.uk
Subject: Flash JIT and spraying info leak gadgets

Hi,

Back in Fall/2012 I did some research on Flash JIT code generation.
This research and lack of constant blinding resulted on the following
paper (including Win7/IE9 exploit code for CVE-2012-4787) where Flash
could be used for ASLR bypass on IE by spraying ROP info leak gadgets.

Document: http://zhodiac.hispahack.com/my-stuff/security/Flash_Jit_InfoLeak_Gadgets.pdf
Exploit code: http://zhodiac.hispahack.com/my-stuff/security/Flash_Jit_InfoLeak_Gadgets/

I just found today (without notification form Adobe) that Flash 11.8
implements JIT constant blinding. So consider this technique gone but
older versions may still be used for info leak purposes. :)

Enjoy,

---
Fermín J. Serna

Web & Blog: http://zhodiac.hispahack.com
Pgp key: http://zhodiac.hispahack.com/gpg/zhodiac.asc
Twitter: @fjserna

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/