TippingPoint Zero Day Initiative

Apple Safari Malformed SVGList Parsing Code Execution Vulnerability

ZDI-09-022: May 13th, 2009


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6960. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific flaw exists during the parsing of malformed SVGLists via the SVGPathList data structure, the following lists are affected: SVGTransformList, SVGStringList, SVGNumberList, SVGPathSegList, SVGPointList, SVGLengthList. When a negative index argument is suppled to the insertItemBefore() method, a memory corruption occurs resulting in the ability to execute arbitrary code.

Vendor Response

Apple has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2009-03-19 - Vulnerability reported to vendor
    2009-05-13 - Coordinated public release of advisory


This vulnerability was discovered by: