[aclug-L] Re: Hacker or ??

["gLaNDix (Jesse Kaufman)" <glandix@xxxxxxxxxxxxxx>]

/usr/local/apache/bin/apachectl stop

 : ^ )

I don't think there's any reliable way to stop the traffic to linux
servers...  basically very similar to the GET /index.ida?XXXX... stuff
from CRII that seems to have become a normal occurance in atleast my
httpd-access.log file...  i know there were various CodeRed Killer
scripts (such as the Apache::CodeRed perl mod), but nothing that
completely stopped the traffic...  what i had done was add any hosts i
found to my /etc/ipfw.conf and denied all traffic on port 80 from them,
but in a business situation, this is not very practical, since you could
very easily block potential customers from seeing your website...

the only reccomendation i have gotten is to create a small index.ida
file (or whatever the file is that the new attack is attempting to
access) by doing a 'touch /usr/local/www/data/index.ida' (or wherever
your DocumentRoot is) so that instead of sending a "huge" 404 error, it
only sends the information contained in your emtpy index.ida file...  i
don't know how much of a difference it really makes, but some have said
it should help bandwidth usage...  on my system, i really haven't
noticed any difference, but it don't have to look at a billion 404
errors in my log (which also means no more related entries in your
httpd-error.log, thus smaller log files if that is a concern)...

other than that, i think we just have to grin and bear it until the
world upgrades to apache... i mean installs the support pack... : ^ )

gLaNDix

p.s. I'd recommend subscribing to AntiOnline.com...  you get to hear
about these things pretty quick...  i was actually surprised to hear
about it there before on any user group lists...  i bcc'd the e-mail to
a number of other places, including RR, so maybe this time they'll take
action sooner......... : ^ )

On 18 Sep 2001 13:05:31 -0500, Joshua S Brown wrote:
> 
> Looks like a new worm that tries to attack 16 vulnerabilities in IIS.
> Wonderful for people who run Linux but are still being pounded.
> 
> Josh Brown
> 
> Anyone have any ideas to stop it or just grin and bear it?
> 
> On Tue, 18 Sep 2001, Steven Saner wrote:
> 
> >
> > Appears that this is the worm that Glandix reported. I got the
> > readme.exe email this morning as well. It was made to appear like a
> > bounce back message from someplace.
> >
> > Steve
> >
> >
> > On Tue, Sep 18, 2001 at 12:49:24PM -0500, Joshua S Brown wrote:
> > >
> > > We are having the same problem on all our web servers. Is this a hack or
> > > something like code red?
> > >
> > >
> > > Josh Brown
> > >
> > > On Tue, 18 Sep 2001, Maverick wrote:
> > >
> > > >
> > > > Hi, all
> > > >  Recently I check on my apache webserver access.log
> > > > and find out a lot of entrie like this:
> > > > 24.254.90.73 - - [18/Sep/2001:10:44:38 -0700] "GET
> > > > /scripts/..%c0%af../winnt/sys
> > > > tem32/cmd.exe?/c+dir HTTP/1.0" 404 231
> > > > 24.254.90.73 - - [18/Sep/2001:10:44:39 -0700] "GET
> > > > /scripts/..%%35%63../winnt/sy
> > > > stem32/cmd.exe?/c+dir HTTP/1.0" 400 215
> > > > 24.254.90.73 - - [18/Sep/2001:10:44:41 -0700] "GET
> > > > /scripts/..%%35c../winnt/syst
> > > > em32/cmd.exe?/c+dir HTTP/1.0" 400 215
> > > > 24.254.90.73 - - [18/Sep/2001:10:44:43 -0700] "GET
> > > > /scripts/..%c1%9c../winnt/sys
> > > > tem32/cmd.exe?/c+dir HTTP/1.0" 404 231
> > > > .....
> > > >
> > > > Is that someone try to access my /var/www/scripts/?
> > > > and my error.log generate something like this..
> > > > Tue Sep 18 10:52:27 2001] [error] [client
> > > > 24.234.20.197] File does not exist: /
> > > > var/www/c/winnt/system32/cmd.exe
> > > > [Tue Sep 18 10:52:28 2001] [error] [client
> > > > 24.234.20.197] File does not exist: /
> > > > var/www/d/winnt/system32/cmd.exe
> > > > ....
> > > >
> > > > anyone have any idea? or did I set something wrong?
> > > > or really have a hacker knocking on my door?
> > > >
> > > > Thanks.
> > > > Mav
> > > >
> > > > __________________________________________________
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