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Kannel 1.4.1 fails to log some messages, logs ALERT - ASCII-NUL chars not allowed.

Asked by pastorchris in PHP Scripting Language, Linux Administration, Unix Network Security

Tags: Kannel, Kannel 1.4.1, ASCII-NUL, smsing, kannel gateway, SUSE linux, kannel SMS gateway, kannel with MySQL, Kannel and PHP

I run Kannel 1.4.1 stable release.
I have observed it over time and I have realised that its like 90% of messages that get logged in the database.
Some messages however are not logged in the database.

I have looked at the logs over time and realised that Kannel commonly logs the following two errors:

First Error:
2009-10-12 17:13:12 [5] WARNING: SMPP: PDU NUL terminated string has no NUL.
2009-10-12 17:13:12 [5] ERROR: SMPP[SMPP:x.x.x.x.:1000/1000:user:]: SMSC returned error code 0x0000000b in response to submit_sm.

Second Error:
Oct 12 09:19:59 MY_HOST suhosin[7281]: ALERT - ASCII-NUL chars not allowed within request variables - dropped variable 'text' (attacker '10.0.0.20', file '/srv/www/htdocs/receive.php')

The second error is got when the PHP script (above) is invoked.
The usage and access log files sometimes have the message logged but no always.

I run PHP 5, MySQL 5 database on a Suse box and I need to get 100 percent SMSs logged into the database.

Could it be that there's a security configuration I am missing or I need to take care of some special characters sent together with the variable 'text' to the PHP script?

How do I get this fixed?
[+][-]10/20/09 03:42 AM, ID: 25612655Expert Comment

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