[23017] in bugtraq

home help back first fref pref prev next nref lref last post

Re: another fatal bug in NT/2000 "Command Prompt" I/O

daemon@ATHENA.MIT.EDU (Chris Gaver Behrens)
Sat Oct 27 16:02:06 2001

Date: Fri, 26 Oct 2001 15:04:42 -0700
From: Chris Gaver Behrens <cbehrens-bugtraq@codestud.com>
To: BugTraq <bugtraq@securityfocus.com>
Message-ID: <20011026150442.Y22890@codestud.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline


Confirmed on a nt4ws.sp6 system, compiling the while(1) program with MS
Visual C++ 6.0.  The system was still running its services like ftp, etc,
but the UI was totally useless.  Even Ctrl-Alt-Del did not work.  Mouse
would move, but couldn't click anything.

What's interesting is...the test program was also compiled with Cygwin's
Cygnus Win32 gcc compiler....and the problem did not occur.  It seems this
might be a bug with MS C stdio libraries?

- Chris

-- 
Chris Gaver Behrens
Senior Software Architect
XO Communications


On Fri, Oct 26, 2001 at 11:35:42AM -0700, Michael Wojcik wrote:
> Recent messages on the comp.lang.c and (allegedly)
> comp.os.ms-windows.programmer.win32 have documented various short programs
> which cause Windows NT4 and 2000 to crash and reboot by writing certain
> strings to stdout.
> 
> The following is one example of such a program:
> 
> #include <stdio.h>
> 
> int main(void)
> {
>    while (1)
>       printf("\t\t\b\b\b\b\b\b");
>    return 0;
> }
[...]

home help back first fref pref prev next nref lref last post