Full Disclosure mailing list archives

Re: strange domain name in phishing email


From: "Jianqiang Xin" <jqxin2006 () gmail com>
Date: Wed, 15 Mar 2006 22:39:10 -0600

I tried the same address using nslookup of windows and linux. The linux
"nslookup" and "host" generate an error message: " ** server can't find
1406379699: NXDOMAIN".

nslookup of Windows translate the number to a domain name. It seems that it
works different for different operating system.

Have a good day and thanks for your help.



On 3/15/06, gboyce <gboyce () badbelly com> wrote:

Can you do a packet capture, and find out what the request to the server
looks like?

Apache 2 doesn't seem to like the decimal host definition sent by most
browsers.  Perhaps IE 7 converts the decimal IP back into octal before
sending it to the server.

On Thu, 16 Mar 2006, Alice Bryson wrote:

hi there:
When I use IE 6 web browser, Apache 1.3 accept this kind of request
but Apache 2.0 doesn't.
When I use IE 7 web browser, Apache 2.0 also accept this kind of
request.


2006/3/15, gboyce <gboyce () badbelly com>:
On Tue, 14 Mar 2006, Chris Umphress wrote:

On 3/14/06, gboyce <gboyce () badbelly com> wrote:
I tried this trick against my personal Apache 2 webserver, and got a
400
bad request as well.  The apache log is showing "Client sent
malformed
Host header".

It looks like Apache is getting the decimal host header, and doesn't
understand what to do with it.  Oddly, the host mentioned in the
initial
e-mail is also Apache, but it's Apache 1.3.

Is your Apache on windows server 1.x or 2.x?


I'll jump in and say that mine works works this way (If you want to
verify, it is http://1136002182/).

I am using Apache 1.3 and have several virtual hosts set up. Since
Apache returns the first virtual host if it doesn't match the names of
any of the other virtual hosts. That could be the determining factor
for why some work and others don't.

I have virtual hosts setup as well, and this behavior doesn't work for
me.

I tested a few different servers, and what I've found is that Apache
1.3
accepts hosts defined in this manner.  Apache 2.0 fails with a 400
error.

Greg

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