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RE: DNS poisoning at Google?

From: Matthew Black <Matthew.Black () csulb edu>
Date: Wed, 27 Jun 2012 05:40:22 +0000
Thanks again to everyone who helped. I didn't know what to enter with curl, because Outlook clobbered the line breaks 
in Jeremy's original message.

Also, curl failed on our primary webserver because of firewall and load balancer magic settings. The Telnet method 
worked better!

Our team is now scouring for that hidden redirect to couchtarts.

matthew black
information technology services
california state university, long beach



From: Landon Stewart [mailto:lstewart () superb net]
Sent: Tuesday, June 26, 2012 10:37 PM
To: Matthew Black
Cc: Jeremy Hanmer; nanog () nanog org
Subject: Re: DNS poisoning at Google?

There is definitely a 301 redirect.

$ curl -I --referer http://www.google.com/ http://www.csulb.edu/
HTTP/1.1 301 Moved Permanently
Date: Wed, 27 Jun 2012 05:36:31 GMT
Server: Apache/2.0.63
Location: http://www.couchtarts.com/media.php
Connection: close
Content-Type: text/html; charset=iso-8859-1

On 26 June 2012 22:05, Matthew Black <Matthew.Black () csulb edu<mailto:Matthew.Black () csulb edu>> wrote:
Google Webtools reports a problem with our HOMEPAGE "/". That page is not redirecting anywhere.
They also report problems with some 48 other primary sites, none of which redirect to the offending couchtarts.

matthew black
information technology services
california state university, long beach




-----Original Message-----
From: Jeremy Hanmer [mailto:jeremy.hanmer () dreamhost com<mailto:jeremy.hanmer () dreamhost com>]
Sent: Tuesday, June 26, 2012 9:58 PM
To: Matthew Black
Cc: nanog () nanog org<mailto:nanog () nanog org>
Subject: Re: DNS poisoning at Google?
It's not DNS.  If you're sure there's no htaccess files in place, check your content (even that stored in a database) 
for anything that might be altering data based on referrer.  This simple test shows what I mean:

Airy:~ user$ curl -e 'http://google.com&apos; csulb.edu<http://csulb.edu> <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> 
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved <a href="http://www.couchtarts.com/media.php";>here</a>.</p>
</body></html>

Running curl without the -e argument gives the proper site contents.
On Jun 26, 2012, at 9:24 PM, Matthew Black <Matthew.Black () csulb edu<mailto:Matthew.Black () csulb edu>> wrote:


Running Apache on three Solaris webservers behind a load balancer. No MS Windows!

Not sure how malicious software could get between our load balancer and Unix servers. Thanks for the tip!

matthew black
information technology services
california state university, long beach



From: Landon Stewart [mailto:lstewart () superb net<mailto:lstewart () superb net>]
Sent: Tuesday, June 26, 2012 9:07 PM
To: Matthew Black
Cc: nanog () nanog org<mailto:nanog () nanog org>
Subject: Re: DNS poisoning at Google?

Is it possible that some malicious software is listening and injecting a redirect on the wire?  We've seen this 
before with a Windows machine being infected.
On 26 June 2012 20:53, Matthew Black <Matthew.Black () csulb edu<mailto:Matthew.Black () csulb 
edu><mailto:Matthew.Black () csulb edu<mailto:Matthew.Black () csulb edu>>> wrote:
Google Safe Browsing and Firefox have marked our website as containing malware. They claim our home page returns no 
results, but redirects users to another compromised website 
couchtarts.com<http://couchtarts.com><http://couchtarts.com>.

We have thoroughly examined our root .htaccess and httpd.conf files and are not redirecting to the problem target 
site. No recent changes either.

We ran some NSLOOKUPs against various public DNS servers and intermittently get results that are NOT our servers.

We believe the DNS servers used by Google's crawler have been poisoned.

Can anyone shed some light on this?

matthew black
information technology services
california state university, long beach
www.csulb.edu<http://www.csulb.edu><http://www.csulb.edu><http://www.csulb.edu>



--
Landon Stewart <LStewart () Superb Net<mailto:LStewart () Superb Net<mailto:LStewart () Superb Net>>>
Sr. Administrator
Systems Engineering
Superb Internet Corp - 888-354-6128 x 4199<tel:888-354-6128%20x%204199> Web hosting and more "Ahead
of the Rest":
http://www.superbhosting.net<http://www.superbhosting.net/>








--
Landon Stewart <LStewart () Superb Net<mailto:LStewart () Superb Net>>
Sr. Administrator
Systems Engineering
Superb Internet Corp - 888-354-6128 x 4199
Web hosting and more "Ahead of the Rest": http://www.superbhosting.net<http://www.superbhosting.net/>
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