Exploit the possiblities

iDEFENSE Security Advisory 2007-03-05.1

iDEFENSE Security Advisory 2007-03-05.1
Posted Mar 8, 2007
Authored by iDefense Labs, Ruben Santamarta | Site idefense.com

iDefense Security Advisory 03.05.07 - Remote exploitation of a heap corruption vulnerability in Apple Computer Inc.'s QuickTime media player could allow an attacker to execute arbitrary commands in the context of the current user. The vulnerability specifically exists in QuickTime players handling of Video media atoms. When the 'Color table ID' field in the Video Sample Description is 0, QuickTime expects a color table to be present immediately after the description. A byte swap process is then performed on the memory following the description, regardless if a table is present or not. Heap corruption will occur in the case when the memory following the description is not part of the heap chunk being processed. iDefense Labs confirmed this vulnerability exists in version 7.1.3 of QuickTime on Windows. Previous versions are suspected to be vulnerable.

tags | advisory, remote, arbitrary
systems | windows, apple
advisories | CVE-2007-0718
MD5 | 54feb9602d6d111ed4418218312eece5

iDEFENSE Security Advisory 2007-03-05.1

Change Mirror Download
Apple QuickTime Color Table ID Heap Corruption Vulnerability

iDefense Security Advisory 03.05.07
http://labs.idefense.com/intelligence/vulnerabilities/
Mar 05, 2007

I. BACKGROUND

Quicktime is Apple's media player product used to render video and other
media. For more information visit http://www.apple.com/quicktime/

II. DESCRIPTION

Remote exploitation of a heap corruption vulnerability in Apple Computer
Inc.'s QuickTime media player could allow an attacker to execute arbitrary
commands in the context of the current user.

The vulnerability specifically exists in QuickTime players handling of
Video media atoms. When the 'Color table ID' field in the Video Sample
Description is 0, QuickTime expects a color table to be present
immediately after the description. A byte swap process is then performed
on the memory following the description, regardless if a table is present
or not. Heap corruption will occur in the case when the memory following
the description is not part of the heap chunk being processed.

III. ANALYSIS

Exploitation allows an attacker to execute arbitrary code in the context of
the current user.

In order to exploit this vulnerability, an attacker must persuade a victim
into opening a specially crafted media file. This could be accomplished by
either a direct link or referenced from a website under the attacker's
control. No further interaction is required in the default configuration.

IV. DETECTION

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

V. WORKAROUND

iDefense is currently unaware of any effective workarounds for this
vulnerability.

VI. VENDOR RESPONSE

Apple has addressed this vulnerability by releasing version 7.1.5 of
Quicktime. More information can be found in Apple Advisory
APPLE-SA-2007-03-05 at the following URL.

http://docs.info.apple.com/article.html?artnum=305149

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2007-0718 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

12/06/2006 Initial vendor notification
12/11/2007 Initial vendor response
02/01/2007 Second vendor notification
03/05/2007 Coordinated public disclosure

IX. CREDIT

This vulnerability was reported to iDefense by Ruben Santamarta of
Reversemode Labs (www.reversemode.com).

Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php

Free tools, research and upcoming events
http://labs.idefense.com/

X. LEGAL NOTICES

Copyright © 2007 iDefense, Inc.

Permission is granted for the redistribution of this alert electronically.
It may not be edited in any way without the express written consent of
iDefense. If you wish to reprint the whole or any part of this alert in
any other medium other than electronically, please e-mail
customerservice@idefense.com for permission.

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, indirect,
or consequential loss or damage arising from use of, or reliance on, this
information.

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