RE: DNS CACHE POISONING? - Our Portal is redirecting to our first competition

["AJ" <arembert () samscreen com>]

Alfonso,
        How are you certain they are being redirected by resources not in
your control? Are you certain the page being loaded is, in fact, your
competitors page and not a phishing site? Have you been able to reproduce
this or are users emailing with complaints? For the users that are
complaining of being redirected, are they experiencing any other issues with
their accounts? This may help narrow where the redirect is actually
occurring.

 
Regards,
 
 
A.J. Rembert
arembert () samscreen com
Ph. 607-722-3979     Fx. 607-722-7128
Samscreen, Inc. / PSSI
216 Broome Corporate Pkwy
Conklin, NY 13748
 
 
 
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-----Original Message-----
From: Stephen John Smoogen [mailto:smooge () gmail com] 
Sent: Tuesday, January 22, 2008 4:00 PM
To: Alfonso Valdes Carrales
Cc: incidents () securityfocus com
Subject: Re: DNS CACHE POISONING? - Our Portal is redirecting to our first
competition

On Jan 22, 2008 1:19 PM, Alfonso Valdes Carrales <ponchovaldes () gmail com>
wrote:
> 2008/1/22, Stephen John Smoogen <smooge () gmail com>:
> > On 22 Jan 2008 00:55:30 -0000,  <ponchovaldes () gmail com> wrote:
> > > Hello guys, we have a social network that is getting stronger, but we
> are having an issue.
> > > And the issue is that Sometimes... our page redirects to another
Portal,
> actually the page that redirects is our first competition,here in Latino
> America, i know that they are causing that kind of mess.. so we thought in
> this.
> > > - We know that our DNS server is ok, and havent been compromised,
> > >
> > > - DNS cache poisoning
> > >
> > > - Malware ?
> > >
> > > - some kind of virus that the guys(bad) made. ( the other portal -
> social network-)
> > >
> >
> > You have provided too little information for anyone to really help.
> > 1) What is your website's architecture?
> > A) What kind of OS on the servers
> > B) What kind of software on the servers
> > C) Is it hosted on dedicated hardware or on a third party software
> > D) Do you use some sort of 3rd party software to get to your page (eg
> > you rely on a company to send customers to your page.)
>
> One box virtualized with XEN that has centos, the website virtualized
> (apache), db(mysql) and the mailserver have DEBIAN also virtualized .
> (dedicated hardware that each sservice is separated in one virtual server
> but consolidated)
>
>  The DNS server is out side, another dedicated server using BIND9 - not
> using any kind of third party software
>
>
>
> > 2) What do you mean by redirect. In small steps explain how a user
> > normally gets to and sees your site and what happens when it doesnt
> > work
>
>
>  User wants to access:  www.unibicate.com    AND sometimes... maybe the
10%
> of the times  if you type www.unibicate.com and hit ENTER, it redirects or
> goes to the page of sonico.com   (this is another social network). Of
> course sonico.com  is causing this mess.
>  If the page works fine, it just displays the page of unibicate and just
log
> in.. as a normal Social network.

One thing I have learned is that in 99% of the cases the other company
is not the cause.. or "Do not blame to malice of your competitor when
there are 4 billion teenagers who think doing this sort of prank is
fun, interesting, cool, etc."

I can't get it to happen at this time from my area.. so I really don't
know what is going on.


-- 
Stephen J Smoogen. -- CSIRT/Linux System Administrator
How far that little candle throws his beams! So shines a good deed
in a naughty world. = Shakespeare. "The Merchant of Venice"