Microsoft IIs '..' hole

Against

IIS on Windows NT

IDs

Category

File disclosure

Effect

File disclosure

Source

No Source information

Description

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

Attack string

GET /Public/../../../autoexec.bat

Attack program source

None available.