ZDI-09-022: Apple Safari Malformed SVGList Parsing Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

ZDI-09-022: Apple Safari Malformed SVGList Parsing Code Execution
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-09-022
May 13, 2009

-- CVE ID:
CVE-2009-0945

-- Affected Vendors:
Apple

-- Affected Products:
Apple Safari

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6960.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- 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:

http://support.apple.com/kb/HT3549

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

-- Credit:
This vulnerability was discovered by:
    * Nils

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