Vulnerability Development mailing list archives

Re: Securax Security Advisory: Windows98 contains a serious buffer overflow with long filenameextensions.


From: lightning () L-G-X DE (LiGHTNiNG)
Date: Mon, 24 Apr 2000 20:49:11 +0200


First machine: Win95

My first attempt was with the batch file verbatim, which as
we've found
by now, doesn't work.  So I changed the ' ' to a '-' and
ran the batch
file again.  I got the '_á.á------Buffer-overflow--blah'
file, but when
the batch file got to the other one all I got was a "File
creation
error".
This error occurs, when the filename is longer than 225
characters.
My batchfile:

dir *.* > noop.1111111111111111111111111111111111
11111111111111111111111111111111111111111111
11111111111111111111111111111111111111111111
11111111111111111111111111111111111111111111
11111111111111111111111111111111111111111111
1111111111

If I woul add one more "1", your error would occure.

Back in Explorer I tried clicking the 'Buffer-overflow'
file -- nothing.
Double clicking it just brought up the Windows 'Open With'
dialog box --
nothing unusual.  And I've had no trouble opening this file
with either
Notepad or WordPad -- I've tried several times both using
the Windows
'Open With' box and the apps' Open dialog boxes.
That was the problem with the original batch file that was
corrupt.

Sebastian "LiGHTNiNG" Maciejewski


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