[OpenSIPS-Users] Connect to AWS RDS database with SSL enabled

Sun Sep 25 16:27:48 UTC 2022

Which version of opensips are you using?
Can you install the debug symbols and get a backtrace from the core file?
https://www.opensips.org/Documentation/TroubleShooting-Crash

Regards,
Ovidiu Sas

On Sun, Sep 25, 2022 at 6:32 AM jacky z <zjack0992 at gmail.com> wrote:
>
> Hi Vlad,
>
> It seems opensips crashed when I set ?tls_domain=dom1 to enable tls connection to mysql db.  I followed the method in the manual.
>
> modparam("usrloc", "db_url", "mysql://root:1234@localhost/opensips?tls_domain=dom1")
>
>
> Here is the log.
>
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:tls_mgm:mod_init: initializing TLS management
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:tls_mgm:init_tls_dom: Processing TLS domain 'dom'
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: NOTICE:tls_mgm:init_tls_dom: no CA dir for tls 'dom' defined, using default '/etc/pki/CA/'
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: NOTICE:tls_mgm:init_tls_dom: no crl for tls, using none
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: NOTICE:tls_openssl:openssl_init_tls_dom: No EC curve defined
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:tls_openssl:get_ssl_ctx_verify_mode: client verification NOT activated. Weaker security.
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:tls_mgm:init_tls_dom: Processing TLS domain 'dom1'
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: NOTICE:tls_mgm:init_tls_dom: no CA dir for tls 'dom1' defined, using default '/etc/pki/CA/'
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: NOTICE:tls_mgm:init_tls_dom: no crl for tls, using none
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: NOTICE:tls_openssl:openssl_init_tls_dom: No EC curve defined
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:tls_openssl:get_ssl_ctx_verify_mode: server verification NOT activated. Weaker security.
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:proto_tls:mod_init: initializing TLS protocol
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:proto_bin:mod_init: initializing BIN protocol
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: INFO:clusterer:mod_init: Clusterer module - initializing
> Sep 25 10:14:01 ip-10-100-20-35 /usr/sbin/opensips[4935]: CRITICAL:core:sig_usr: segfault in attendant (starter) process!
> Sep 25 10:14:01 ip-10-100-20-35 kernel: [39023.653243] opensips[4935]: segfault at 0 ip 0000000000000000 sp 00007ffececa3d08 error 14 in opensips[558b5bb75000+1c000]
> Sep 25 10:14:01 ip-10-100-20-35 kernel: [39023.666503] Code: Bad RIP value.
> Sep 25 10:14:01 ip-10-100-20-35 opensips: INFO:core:daemonize: pre-daemon process exiting with -1
>
> and my client domain settings
>
> #client domain
> modparam("tls_mgm", "client_domain", "dom1")
> modparam("tls_mgm", "match_ip_address", "[dom1]*")
> modparam("tls_mgm", "match_sip_domain", "[dom1]*")
> modparam("tls_mgm","certificate", "[dom1]/etc/ssl/certs/rootCACert.pem")
> modparam("tls_mgm","private_key", "[dom1]/etc/ssl/private/rootCAKey.pem")
> modparam("tls_mgm","ca_list", "[dom1]/etc/ssl/certs/rootCACert.pem")
> modparam("tls_mgm","tls_method", "[dom1]SSLv23")
> modparam("tls_mgm","verify_cert", "[dom1]0")
> modparam("tls_mgm","require_cert", "[dom1]0")
>
> It is expected to see some other errors such as invalid cert but not crash in pre-daemon process. Any clue on this for me to debug? If I remove "?tls_domain=dom1", there is no such crash though the opensips server still couldn't start because I forced the mysql db to use ssl connection. Thanks!
>
> On Mon, Sep 19, 2022 at 9:09 PM Vlad Patrascu <vladp at opensips.org> wrote:
>>
>> Hi Jacky,
>>
>> I cant think of any workaround unfortunately.
>>
>> Regards,
>>
>> --
>> Vlad Patrascu
>> OpenSIPS Core Developer
>> http://www.opensips-solutions.com
>>
>> On 17.09.2022 18:46, jacky z wrote:
>>
>> Hi  Vlad,
>>
>> Is there any workaround to disable the client cert? Thanks!
>>
>> On Wed, Sep 14, 2022 at 9:16 PM Vlad Patrascu <vladp at opensips.org> wrote:
>>>
>>> Hi Jacky,
>>>
>>> OpenSIPS will always require you to configure a client certificate for TLS client domains and will also present that certificate when connecting. But normally, a TLS server can simply choose not to verify the client certificate. I don't have any experience with AWS RDS though but it seems odd to not accept a connection only because the client did present a certificate.
>>>
>>> Regards,
>>>
>>> --
>>> Vlad Patrascu
>>> OpenSIPS Core Developer
>>> http://www.opensips-solutions.com
>>>
>>> On 14.09.2022 05:42, jacky z wrote:
>>>
>>> Hi Bogdan-Andrei,
>>>
>>> I checked the mariadb documentation and found mariadb has two options to set ssl connection: two-way TSL and one-way TSL. It seems AWS RDS only supports one-way TSL, that is, TSL is used without a client cert. Does OPENSIPS support such one-way TSL to connect a database? Thanks!
>>>
>>> On Wed, Sep 14, 2022 at 12:06 AM jacky z <zjack0992 at gmail.com> wrote:
>>>>
>>>> Hi Bogdan-Andrei,
>>>>
>>>> I have set the "certificate" and "private_key" in my script, as I explained in method 1. However, AWS RDS doesn't support a client cert. Please refer to
>>>> https://stackoverflow.com/questions/53760104/how-to-configure-x509-client-certificate-based-authentication-to-connect-to-aws
>>>>
>>>> Is there any workaround to use the public cert list provided by AWS? Anyone has successfully used RDS with SSL connections? Thanks!
>>>>
>>>> On Tue, Sep 13, 2022 at 9:54 PM Bogdan-Andrei Iancu <bogdan at opensips.org> wrote:
>>>>>
>>>>> Set the certificate and key you have in the tls_mgm module, for the "certificate" and "private_key" parameters.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Bogdan-Andrei Iancu
>>>>>
>>>>> OpenSIPS Founder and Developer
>>>>>   https://www.opensips-solutions.com
>>>>> OpenSIPS Summit 27-30 Sept 2022, Athens
>>>>>   https://www.opensips.org/events/Summit-2022Athens/
>>>>>
>>>>> On 9/13/22 2:57 PM, jacky z wrote:
>>>>>
>>>>> Hi Bogdan-Andrei,
>>>>>
>>>>> I tried two methods.
>>>>>
>>>>> Method 1:
>>>>>
>>>>> #enabled TLS connection:
>>>>> modparam("db_mysql", "use_tls", 1)
>>>>>
>>>>> #setup a client domain:
>>>>> modparam("tls_mgm", "client_domain", "dom1")
>>>>> modparam("tls_mgm", "match_ip_address", "[dom1]*")
>>>>> modparam("tls_mgm", "match_sip_domain", "[dom1]*")
>>>>> modparam("tls_mgm","certificate", "[dom1]/etc/ssl/certs/rootCACert.pem")
>>>>> modparam("tls_mgm","private_key", "[dom1]/etc/ssl/private/rootCAKey.pem")
>>>>> modparam("tls_mgm","ca_list", "[dom1]/etc/ssl/certs/rootCACert.pem")
>>>>> modparam("tls_mgm","tls_method", "[dom1]SSLv23")
>>>>> modparam("tls_mgm","verify_cert", "[dom1]0")
>>>>> modparam("tls_mgm","require_cert", "[dom1]0")
>>>>> # set db_url
>>>>> modparam("usrloc", "db_url", "mysql://root:1234@<awsrdsaddress>/opensips?tls_domain=dom1")
>>>>> ...
>>>>>
>>>>> I couldn't figure out how to use global-bundle.pem AWS provided with this method. No luck to get a connection with RDS. If I don't use ssl, opensips can connect to RDS without encryption.
>>>>>
>>>>> Method 2:
>>>>>
>>>>> I tried
>>>>>
>>>>> modparam("usrloc", "db_url", "mysql://root:1234@<awsrdsaddress>/opensips?ssl=true&ssl_ca_certs=/etc/ssl/certs/global-bundle.pem")
>>>>>
>>>>> to include the AWS cert. Still no luck.
>>>>>
>>>>> Thanks!
>>>>>
>>>>> On Tue, Sep 13, 2022 at 4:52 PM Bogdan-Andrei Iancu <bogdan at opensips.org> wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> sorry for my silly question, but how do you connect from the OpenSIPS side ??
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>> Bogdan-Andrei Iancu
>>>>>>
>>>>>> OpenSIPS Founder and Developer
>>>>>>   https://www.opensips-solutions.com
>>>>>> OpenSIPS Summit 27-30 Sept 2022, Athens
>>>>>>   https://www.opensips.org/events/Summit-2022Athens/
>>>>>>
>>>>>> On 9/13/22 10:41 AM, jacky z wrote:
>>>>>>
>>>>>> Hi Team,
>>>>>>
>>>>>> We hope to connect to aws RDS database with ssl encryption. We have setup a client domain according to OPENSIPS documents. However, AWS RDS does not support client cert as someone has confirmed with AWS https://stackoverflow.com/questions/53760104/how-to-configure-x509-client-certificate-based-authentication-to-connect-to-aws
>>>>>>
>>>>>> Is there any way to use the cert provided by AWS to connect? AWS provides a global-bundle.pem (https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/UsingWithRDS.SSL.html) for such a connection, but we don't know how to include it in the config file.
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> Jacky z
>>>>>>
>>>>>> _______________________________________________
>>>>>> Users mailing list
>>>>>> Users at lists.opensips.org
>>>>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>>>>
>>>>>>
>>>>>
>>>
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>>
>>
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