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Zero Day Initiative Advisory 11-311

Zero Day Initiative Advisory 11-311
Posted Oct 27, 2011
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 11-311 - This vulnerability allows remote attackers to potentially disclose memory addresses on vulnerable installations of Apple QuickTime Player. 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 how QuickTime.qts parses a data handler in specific atom within a .mov file. The application will utilize a string length to copy data into an heap buffer, if the string is of zero-length, the application will fail to copy anything and then proceed to use the uninitialized buffer as a string.

tags | advisory, remote
systems | apple
advisories | CVE-2011-3220
MD5 | 2edb765a47b2f312adfd89db39f8a871

Zero Day Initiative Advisory 11-311

Change Mirror Download
ZDI-11-311 : Apple Quicktime Empty URL Data Handler Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-11-311
October 27, 2011

-- CVE ID:
CVE-2011-3220

-- 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 11804.
For further product information on the TippingPoint IPS, visit:

http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to potentially disclose
memory addresses on vulnerable installations of Apple QuickTime Player.
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 how QuickTime.qts parses a data handler
in specific atom within a .mov file. The application will utilize a
string length to copy data into an heap buffer, if the string is of
zero-length, the application will fail to copy anything and then proceed
to use the uninitialized buffer as a string.

-- Vendor Response:

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

http://support.apple.com/kb/HT5002



-- Disclosure Timeline:
2011-05-12 - Vulnerability reported to vendor
2011-10-27 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:

* Luigi Auriemma



-- 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/

Follow the ZDI on Twitter:

http://twitter.com/thezdi

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