Hi Everybody,

i am rephrasing my question that

i got a legal registered sip account 1001 on freeswitch

but some hacker who is not registered on my freeswitch
but use same 1001 account and make call.

i put condition in xml_dialplan to verify and allow only register sip accounts to call
as

<condition field="${sofia_contact */1001@freeswitchIP}" expression="^[^@]+@(.+)">>

but hacker find someway to pass the regex through some back whole in my script and make calls

dialplan xml is 

http://pastebin.freeswitch.org/22054

fs_cli log as 

http://pastebin.freeswitch.org/22050

xml_cdr is 

http://pastebin.freeswitch.org/22052

i also try to generate the scenario but got no success, but now want to know

how hacker made successful call in the above scenario and what is the best way to prevent from hacking in future

Regards

Shahzad Bhatti

---------- Forwarded message ----------
From: Shahzad Bhatti <shahzad.bhatti@g-r-v.com>
Date: Fri, Feb 28, 2014 at 11:51 PM
Subject: Call Without Authorization
To: freeswitch-users@lists.freeswitch.org

Hi everybody,

i create my xml_curl script as that don't allow unregistered calls with the following condition

<condition field=\"\${sofia_contact */{$sipuser}@$domain}\" expression=\"^[^@]+@(.+)\">

and its working but yesterday a call is originated from having 

fs_cli log as 

http://pastebin.freeswitch.org/22050

xml_cdr is 

http://pastebin.freeswitch.org/22052

dialplan xml is 

http://pastebin.freeswitch.org/22054

this is only example that how the hacker breached

i want to know that 

1.  how it is possible that this call is originated as i check condition that allow to call only  registered sip accounts.

2.  how to prevent that this would not happened in future. 

3. if there any better way to do that do inform me;

i check about 500 calls placed under the given scenario and many of them also answered

Regards

Shahzad Bhatti