Re: A small quandary

[gminick <gminick () underground org pl>]

On Wed, Dec 04, 2002 at 08:30:08PM -0800, Mahoney, Paul wrote:
[...]
> /scripts..%c1%9c../winnt/system32/cmd.exe?/c+dir+c: 1 - 
> /cgi-bin/mrtg.cgi?cfg=/../../../../../../../../../winnt/win.ini 1 - 
> /scripts/.%252e/.%252e/winnt/system32/cmd.exe?/c+dir+c:\\  
> My question to everyone out there is would anyone be able to tell me if
> this kind of attack has the fingerprints of any known software/viruses
> in the field or is it a deliberate attempt to gain access to my clients
> site?
What you're seeing is a work of some vulnerability scanner,
and it looks like it checks for dozens of possible vulnerabilities
like directory traversals (i.e: <http://www.kb.cert.org/vuls/id/111677>,
<http://online.securityfocus.com/bid/1806/exploit/>) and vulnerabilities
in CGI scripts. Such scanners are doing things as they were blind.
It isn't important what kind of software you're using, that tool
probes you as long as one of its methods works against your server.
If your server answered with http code 404 it means that there's no
such script of file on your server. What's also important there exists
attack against windoze boxes and against unix/linux ones.
If you're running apache on linux all those "/scripts/.%252e/.%252e
/winnt/system32/cmd.exe?/c+dir+c:\\" can't hurt you.
If you're interested in exploring those malicious toys take a look at
<http://www.ussrback.com/files.html>,
<http://packetstormsecurity.nl/UNIX/cgi-scanners/> and
<http://www.zone-h.org/en/download/category=3/>.

-- 
[ ] gminick (at) underground.org.pl  http://gminick.linuxsecurity.pl/ [ ]
[ "Po prostu lubie poranna samotnosc, bo wtedy kawa smakuje najlepiej." ]


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