Advisory Details

June 8th, 2010

Apple Webkit ProcessInstruction Target Error Message Insertion Remote Code Execution Vulnerability

ZDI-10-099
ZDI-CAN-702

CVE ID CVE-2010-1403
CVSS SCORE 10.0, (AV:N/AC:L/Au:N/C:C/I:C/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 9872. 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's 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 with how WebKit inserts error messages into documents utilizing the SVG namespace. Upon a parsing error the library will attempt to access an element before repairing the XML. This will cause the library to access uninitialized memory which can lead to code execution under the context of the application.

VENDOR RESPONSE Apple has issued an update to correct this vulnerability. More details can be found at:
http://support.apple.com/kb/HT4196
DISCLOSURE TIMELINE
  • 2010-02-23 - Vulnerability reported to vendor
  • 2010-06-08 - Coordinated public release of advisory
CREDIT wushi of team509
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