Vulnerability Development mailing list archives

Re: Coding Conservative CGI Perl


From: Randy Janinda <rjaninda () tqlabs com>
Date: 10 Jun 2002 15:57:29 -0400

Whoops. I should have tested first. Instead of `$NV{QUERY_STRING}` do
system($ENV{QUERY_STRING});

Randy

On Mon, 2002-06-10 at 01:27, Justin Lavoie wrote:
Hello,
   This isn't an advisory or a technique or anything that would gain anyone here knowledge I'm sorry if this is out 
of place but it's the only place I knew to turn to - to raise my concern.  I feel kind of unconfrontable asking 
because I don't know if this newsletter is excatly for what I'm requesting - directly.

I'm working on a type of exploit and in doing so I must develop a *.cgi file that'd run on a Linux and Windows box to 
allow me to read or upload file (whatever is possible) without the use of spaces!  To ellaborate on what I mean 
here's an example of a normal little hello script :

#!/usr/bin/perl
print "Content-type:text/html\n\n";
print "SUP!<BR>";

This will not work but recoded to work (not having spaces) would be:

#!/usr/bin/perl
print("Content-type:text/html\n\n");
print("SUP!<BR>");

You can have just about any character other than spaces... I'm no good with perl really unfournately although I have 
read quite a number of articles the only thing I've successfully found remotely useful was using 
print($ENV{DOCUMENT_ROOT}); to find the location of the file heh.

This is why I raise the question here on what can be done in perl without the use of spaces.  What I've been trying 
to get was something that allows uploading a file (so basically I could upload another .asp which does contain spaces 
and solve all my problems)  The uploader doesn't need to be pretty or anything just has to work even anyway possible 
to write another file... Even viewing files or directory listings would be excellent, I'm not picky, I'm not really 
expecting anything really - just hoping.

I thank you for any advice or help that you may give.

-SiLenCe
[Transparent Entity]
-- 
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