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From Gil Vidals <gvid...@gmail.com>
Subject Re: [users@httpd] Someone hacked my apache2 server
Date Sun, 04 Apr 2010 02:55:11 GMT
Oleg,

What kind of web application firewall (WAF) are you running on your web
servers? If the answer is "none", then you will have many problems with
malware and hackers.  You must have proper security. Google "mod_security"
or hire a web security guy to take care of your servers for you.

Gil Vidals
www.vmracks.com

On Sat, Apr 3, 2010 at 2:20 PM, Oleg Goryunov <oleg.goryunov@gmail.com>wrote:

> Hello all,
> It looks like someone hacked my apache2 server and I am trying to
> understand how this could have happened.
> This is what happened:
> All of a sudden the server - in response to a web-browser request for a
> page - started to give a full screen of unknown characters (looked like a
> long text with encoding mismatch).
> The output was immediate and the same for all the web-sites located on the
> server.
> Looking at the page source of the output I see the following:
> =========
>
> <iframe src=  http://a z s x d e 5 5 . 9 9 6 6 . org:8800/ak47/29.html
> width=1 height=1></iframe> Л ������ э[сn█8 ■▌�√ \-░{
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>
> ==================
> The address indicated in the begining of the page code leads to some
> chinese server.
>
>
> So, somehow it happened that the output of the apache server was
> substituted by this page, which redirected visitors to some chinese server. It
> is the second time I am posting to the mailing list, the first time the
> mailing list virus scanner identified the content as having the
> Troj/Fujif-Gen virus, thus, this time I removed active links from the
> message body so it is not exactly what I received).
>
>
> But the most strange thing was that the problem dissapeared itself! So, it
> last for 10 minutes then disappeared! And the again started and again
> dissapeared. Finally, I turned down apache untill I understand what is going
> on...
>
> Any idea how could that happen?  How to reproduce this? How to prevent?
> Where to look for logs? I have check both ssh logs and apache logs, there
> is nothing that could seem unusual there...
>
> Any help is appreciated.
> Oleg.
>
>
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