TippingPoint Zero Day Initiative

Apple Quicktime Empty URL Data Handler Remote Code Execution Vulnerability

ZDI-11-311: October 27th, 2011


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11804. For further product information on the TippingPoint IPS:

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:

Disclosure Timeline

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


This vulnerability was discovered by:
    Luigi Auriemma