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Date: Wed, 11 Jul 2007 18:50:06 -0400
From: iDefense Labs <>
Subject: iDefense Security Advisory 07.11.07: Apple
 QuickTime SMIL File Processing Integer Overflow Vulnerability

Apple QuickTime SMIL File Processing Integer Overflow Vulnerability

iDefense Security Advisory 07.11.07
Jul 11, 2007


QuickTime is Apple's media player product used to render video and other
media. For more information visit

The Synchronized Multimedia Integration Language (SMIL) provides a
high-level scripting syntax for describing multimedia presentations.
SMIL files are text files that use XML-based syntax to specify what
media elements to present, and where and when to present them.


Remote exploitation of an integer overflow vulnerability in Apple
Computer Inc.'s QuickTime media player could allow attackers to execute
arbitrary code in the context of the targeted user.

The vulnerability specifically exists in QuickTime players handling of
the title and author fields in an SMIL file. When parsing an SMIL file,
arithmetic calculations can cause insufficient memory to be allocated.
When copying in user-supplied data from the SMIL file, a heap-based
buffer overflow occurs. This results in a potentially exploitable


Exploitation could allow attackers to execute arbitrary code in the
context of the current user.

In order to exploit this vulnerability, an attacker must persuade a user
into using QuickTime to open a specially crafted SMIL file. This could
be accomplished using a malicious SMIL file referenced from a website
under the attacker's control.


iDefense Labs confirmed this vulnerability exists in version 7.1.3 and
7.1.5 of QuickTime on Windows and Mac OS X. Previous versions are
suspected to be vulnerable.


iDefense is currently unaware of any effective workarounds for this


Apple has released QuickTime 7.2 which resolves this issue. More
information is available via Apple's QuickTime Security Update page at
the URL shown below.


The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2007-2394 to this issue. This is a candidate for inclusion in
the CVE list (, which standardizes names for
security problems.


04/02/2007  Initial vendor notification
04/09/2007  Initial vendor response
07/11/2007  Coordinated public disclosure


This vulnerability was reported to iDefense by David Vaartjes from ITsec
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Copyright © 2007 iDefense, Inc.

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Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
 There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
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