Advisory Details

April 19th, 2011

Webkit Undefined DOM Prototype Attach Remote Code Execution Vulnerability

ZDI-11-138
ZDI-CAN-1036

CVE ID CVE-2011-0234
CVSS SCORE 9.0, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
AFFECTED VENDORS Apple
AFFECTED PRODUCTS WebKit
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11100. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari Webkit. 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 application's implementation of a Frame element. When attaching this element to a document, the application will duplicate a reference of an anonymous block. When freeing the container holding the Frame element, the reference will still be available. If an attacker can perform an explicit type change of the contents the element this can then be leveraged to gain code execution under the context of the application.

ADDITIONAL DETAILS
DISCLOSURE TIMELINE
  • 2011-03-31 - Vulnerability reported to vendor
  • 2011-04-19 - Coordinated public release of advisory
  • 2020-07-30 - Advisory Updated
CREDIT wushi of team509
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