[NT] Quick Time Media Player for Windows Buffer Overflow

From: support@securiteam.com
Date: 04/02/03

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    From: support@securiteam.com
    To: list@securiteam.com
    Date: 2 Apr 2003 23:52:07 +0200

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      Quick Time Media Player for Windows Buffer Overflow


     <http://www.apple.com/quicktime/> QuickTime Player is a popular media
    player for both the Microsoft Windows and Apple Mac platforms.
    An exploitable buffer overflow condition has been discovered in Apple
    Computer Inc.'s QuickTime Player, allowing for the remote execution of
    arbitrary code.


    The vulnerability lies in the processing of long QuickTime URL's
    (quicktime:// or through the -u switch). When processing a QuickTime URL,
    the application is launched in the following manner as can be seen from
    the Windows registry key HKEY_CLASSES_ROOT/quicktime:

    %PATH TO QUICKTIME%\QuickTimePlayer.exe -u"%1"

    A URL containing 400 characters will overrun the allocated space on the
    stack overwriting the saved instruction pointer (EIP). This will thereby
    allow an attacker to redirect the flow of control. An example URL that
    will cause QuickTime player to crash is:


    Where the character 'A' is repeated 400 times.


    iDEFENSE has confirmed that QuickTime Player versions 5.x and 6.0 for the
    Microsoft Windows platform are vulnerable. QuickTime for MacOS is not


    Any remote attacker can compromise a target system if he or she can
    convince a user to load a specially crafted exploit URL. Upon successful
    exploitation, arbitrary code can be executed under the privileges of the
    user who launched QuickTime.


    Removing the QuickTime handler from the web browser or removing the
    registry key HKEY_CLASSES_ROOT/quicktime can prevent automatic
    exploitation through HTML pages.

    Vendor status:

    Apple has released QuickTime 6.1 which addresses this vulnerability. It
    is available from <http://www.apple.com/quicktime/download/> .


    The original article can be downloaded from iDEFENSE


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