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TUCoPS :: Apple(multi) :: bx6057.htm

Apple QuickTime FlashPix NumberOfTiles Remote Code Execution Vulnerability



ZDI-10-043: Apple QuickTime FlashPix NumberOfTiles Remote Code Execution Vulnerability
ZDI-10-043: Apple QuickTime FlashPix NumberOfTiles Remote Code Execution Vulnerability



ZDI-10-043: Apple QuickTime FlashPix NumberOfTiles Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-043 
April 2, 2010

-- CVE ID:
CVE-2010-0519

-- 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 9569. 
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 specific flaw exists during the parsing of a malformed SubImage
Header Stream from a malicious FlashPix image. The application takes the
NumberOfTiles field from this data structure, multiplies it by 16, and
then uses it in an allocation. If this result is larger than 32-bits the
value will wrap leading to an under-allocated buffer. Later when the
application copies data into this buffer, a buffer overflow will occur
leading to code execution within the context of the application.

-- Vendor Response:
Apple has issued an update to correct this vulnerability. More
details can be found at:

http://support.apple.com/kb/HT4104 

-- Disclosure Timeline:
2009-10-27 - Vulnerability reported to vendor
2010-04-02 - Coordinated public release of advisory

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

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com 

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

http://www.zerodayinitiative.com/advisories/disclosure_policy/ 

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