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Zero Day Initiative Advisory 12-109

Zero Day Initiative Advisory 12-109
Posted Jun 29, 2012
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 12-109 - 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 parsing of XML elements within a TeXML file. Specifically, when handling the karaoke XML element the code within QuickTime3GPP.qtx does not properly validate the length of the data within specific sub-fields. By providing specially crafted data, the code can be made to copy too much data into a fixed-length buffer on the stack. Exploitation of this vulnerability could allow a remote attacker to execute arbitrary code under the context of the user running Quicktime.

tags | advisory, remote, arbitrary
systems | apple
SHA-256 | 66658c754e796e0918edaec264117e07ba214d3cfb5485a34005f242ab8c18c5

Zero Day Initiative Advisory 12-109

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ZDI-12-109 : Apple Quicktime TeXML Karaoke Element Parsing Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-109
June 28, 2012

- -- CVE ID:
CVE-12-0663

- -- CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

- -- 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 12422.
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 within the parsing of XML elements within a TeXML
file. Specifically, when handling the karaoke XML element the code within
QuickTime3GPP.qtx does not properly validate the length of the data within
specific sub-fields. By providing specially crafted data, the code can be
made to copy too much data into a fixed-length buffer on the stack.
Exploitation of this vulnerability could allow a remote attacker to execute
arbitrary code under the context of the user running Quicktime.

- -- Vendor Response:


- -- Disclosure Timeline:
2011-11-04 - Vulnerability reported to vendor
2012-06-28 - Coordinated public release of advisory


- -- Credit:
This vulnerability was discovered by:
* Alexander Gavrun


- -- 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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