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ZDI-10-168: Apple QuickTime ActiveX _Marshaled_pUnk Remote Code Execution Vulnerability

ZDI-10-168: Apple QuickTime ActiveX _Marshaled_pUnk Remote Code Execution Vulnerability
August 31, 2010

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:

-- Affected Products:
Apple Quicktime

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10407. 
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-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Apple Quicktime. User interaction is
required to exploit this vulnerability in that the target must visit a
malicious page or open a malicious file.

The specific flaw exists within the QTPlugin.ocx ActiveX control. The
plugin accepts a parameter named _Marshaled_pUnk that it uses as a valid
pointer. By specifying invalid values an attacker can force the
application to jump to a controlled location in memory. This can be
exploited to execute remote code under the context of the user running
the web browser.

-- Vendor Response:
Apple states:
This issue has been publicly disclosed by an independent researcher.
Update from Apple is still in progress.

-- Disclosure Timeline:
2010-06-30 - Vulnerability reported to vendor
2010-08-31 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * HBelite

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