ZDI-10-255: Apple QuickTime m1s Parsing Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-255

November 10, 2010

-- CVE ID:
CVE-2010-3792

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

-- Affected Vendors:
Apple

-- Affected Products:
Apple Quicktime

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10617.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- 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 flaw exists within the quicktime.qtx. When handling the m1s atom an
integer value is used as an offset into a buffer. Minimal validation is
done and an attacker can supply a negative value. This can be used to
write to an arbitrary address in process memory. A remote attacker can
exploit this vulnerability to execute arbitrary code under the context
of the user.

-- Vendor Response:
Apple states:
Fixed in Mac OS X 10.6.5: http://support.apple.com/kb/HT4435

-- Disclosure Timeline:
2010-07-20 - Vulnerability reported to vendor
2010-11-10 - Coordinated public release of advisory

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

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