[sr-dev] [SR-Dev] To parser bug

[Nils Ohlmeier]

Hi,

> 2009/5/28 Nils Ohlmeier <nils at iptel.org>:
>>> during testing SER at SIPit 24 I discovered something what I believe is
>>> a major bug in the To and From header parser of SER.
>>>
>>> When you send a request with a To or From header like this:
>>>   To: <sip:nils at invalid.com>;foo
>>> the To header parameter parser fails, and the whole To header is not
>>> parsed.
>
> Hi Nils, I'm trying it in Kamailio 1.5 (sending a request with "To:
> <sip:nils at invalid.com>;foo") and no error occurs.
> Does it just affect to SR?

I would think that Kamailio is affected as well, because To header
parameter parser code is in the SER CVS since 2002 and was basically not
touched since then. So if not somebody in the Kamilio project fixed this
it should be the same.
During my tests I found out that it is important that you are using a
configuration which actually tries to parse the To header at all. For
example if you send an OPTIONS request to the iptel.org server (not a
user), the To header can be as ugly as you want (you will always get a 200
OK), because the configuration does not care the To header at all. But if
you send a REGISTER with such a To header you will not get any response at
all.

Regards
  Nils