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Zero Day Initiative Advisory 11-250

Zero Day Initiative Advisory 11-250
Posted Aug 10, 2011
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 11-250 - 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 way Quicktime handles invalid Sample Duration values in the Time-To-Sample atoms. This value is used in the calculation of a loop counter. If this counter is too big it will result in a heap overflow that can cause remote code execution under the context of the current user.

tags | advisory, remote, overflow, arbitrary, code execution
systems | apple
advisories | CVE-2011-0252
SHA-256 | 581a285c35b3772d09b1038c48161dd767d3e75b5de3a44a9571abbe1fdc1e4e

Zero Day Initiative Advisory 11-250

Change Mirror Download
ZDI-11-250: Apple QuickTime STTS atom Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-250

August 9, 2011

-- CVE ID:
CVE-2011-0252

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

-- Affected Vendors:
Apple

-- Affected Products:
Apple Quicktime

-- 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 way Quicktime handles invalid Sample
Duration values in the Time-To-Sample atoms. This value is used in the
calculation of a loop counter. If this counter is too big it will result
in a heap overflow that can cause remote code execution under the
context of the current user.

-- Vendor Response:
Apple has issued an update to correct this vulnerability. More
details can be found at:
http://support.apple.com/kb/HT4826

-- Disclosure Timeline:
2011-04-11 - Vulnerability reported to vendor
2011-08-09 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* Matt "j00ru" Jurczyk

-- 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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