iDefense Security Advisory 01.15.08
http://labs.idefense.com/intelligence/vulnerabilities/ 
Jan 15, 2008

I. BACKGROUND

Quicktime is Apple's media player product, and is used to render video
and other media. For more information visit the vendor's web site at
the following URL.

http://www.apple.com/quicktime/ 

II. DESCRIPTION

Remote exploitation of a heap corruption 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 the handling of Macintosh
Resources embedded in QuickTime movies. When processing these records,
a length value stored in the resource header is not properly validated.
When a length value larger than the actual buffer size is supplied,
potentially exploitable memory corruption occurs.

III. ANALYSIS

Exploitation of this vulnerability allows attackers to execute arbitrary
code in the context of the targeted user. In order to exploit this
vulnerability, an attacker must persuade a user into using QuickTime to
open a specially crafted QuickTime movie file.

IV. DETECTION

iDefense Labs confirmed this vulnerability exists in QuickTime Player
version 7.3.1. Previous versions are suspected to be vulnerable.

V. WORKAROUND

iDefense is currently unaware of any effective workaround for this
issue.

VI. VENDOR RESPONSE

Apple has released QuickTime 7.4 which resolves this issue. More
information is available via Apple's QuickTime Security Update page at
the URL shown below.

http://docs.info.apple.com/article.html?artnum=307301 

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-0032 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for 
security problems.

VIII. DISCLOSURE TIMELINE

09/13/2007  Initial vendor notification
09/13/2007  Initial vendor response
01/15/2008  Coordinated public disclosure

IX. CREDIT

This vulnerability was discovered by Jun Mao of VeriSign iDefense Labs.

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X. LEGAL NOTICES

Copyright =A9 2008 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
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reliance on, this information.