Advisory Details

March 2nd, 2011

Apple Webkit setOuterText Memory Corruption Remote Code Execution Vulnerability

ZDI-11-097
ZDI-CAN-1009

CVE ID CVE-2011-0116
CVSS SCORE 9, (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 10858. 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 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 setOuterText method of the Webkit htmlelement library. Due to a failure to properly track DOM manipulations made within the browser, it is possible to make use of a previously freed pointer and facilitate remote code execution under the context of the user running the browser process.

ADDITIONAL DETAILS Apple has issued an update to correct this vulnerability. More details can be found at:
http://support.apple.com/kb/HT4554
DISCLOSURE TIMELINE
  • 2010-12-21 - Vulnerability reported to vendor
  • 2011-03-02 - Coordinated public release of advisory
CREDIT Anonymous
BACK TO ADVISORIES