TippingPoint Zero Day Initiative
 

Apple Quicktime TeXML Karaoke Element Parsing Remote Code Execution Vulnerability

ZDI-12-109: June 28th, 2012

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12422. For further product information on the TippingPoint IPS:

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

Apple states:


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