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Zero Day Initiative Advisory 10-253

Zero Day Initiative Advisory 10-253
Posted Nov 18, 2010
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 10-253 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple QuickTime. User interaction is required in that a target must open a malicious media file or visit a malicious page. The specific flaw exists within the application's implementation of the LZW compression when opening a certain file format. The application will allocate a buffer for the image and then decompress image data into it. Due to explicitly trusting the decompressed data, a buffer overflow will occur. This can lead to memory corruption and code execution under the context of the application.

tags | advisory, remote, overflow, arbitrary, code execution
systems | apple
advisories | CVE-2010-3795
SHA-256 | fe374b74ffd3ec1fa3b226c2ad62ac1ca58d5897d87d84a8c4412186329c9887

Zero Day Initiative Advisory 10-253

Change Mirror Download
ZDI-10-253: Apple QuickTime GIF LZW Decompression Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-253

November 10, 2010

-- CVE ID:
CVE-2010-3795

-- 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 in that a target must open a malicious media file or visit a
malicious page.

The specific flaw exists within the application's implementation of the
LZW compression when opening a certain file format. The application will
allocate a buffer for the image and then decompress image data into it.
Due to explicitly trusting the decompressed data, a buffer overflow will
occur. This can lead to memory corruption and code execution under the
context of the application.


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

-- Disclosure Timeline:
2010-06-30 - Vulnerability reported to vendor
2010-11-10 - 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/

Follow the ZDI on Twitter:

http://twitter.com/thezdi


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