Microsoft IIs '..' hole
| Description: | ANOTHER stupid MS '..' bug, this time in their web server. |
| Author: | possibly Thomas Lopatic (lopatic@dbs.informatik.uni-muenchen.de) |
| Compromise: | Gain unauthorized access to files outside the public html directories. |
| Vulnerable Systems: | Systems running a vulnerable IIs http server, mostly Windows NT boxes. |
| Date: | 26 July 1996 |
Exploit:
From: Thomas Lopatic (lopatic@dbs.informatik.uni-muenchen.de)
Date: Fri, 26 Jul 1996 20:41:13 +0200
> > and there is another
> >'..' error in their Internet Information Server. Anyone offering more?
>
> I have yet to see this error in IIS. Where and how does it exist?
Sorry for not disclosing. I thought I had seen that one on bugtraq. Suppose
there is a document 'http://dummy.com/Public/Index.htm' and 'Index.html' is
'C:\inetsrv\wwwroot\Public\Index.htm'. Then try getting
'http://dummy.com/Public/../../../autoexec.bat' which will give you
'C:\autoexec.bat'. It seems, however, that the first directory ('Public')
will be necessary, i. e. 'http://dummy.com/../../autoexec.bat' won't
work.
But now back to the Unix things.
-Thomas
--
Thomas Lopatic lopatic@informatik.uni-muenchen.de
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