New subject: Connect with SSL

3 Jun 2016

Hi,
Sorry for delay.
I forgot the versions:
Database server
Server: fone2 (127.0.0.1 via TCP/IP)
Server type: MySQL
Server version: 5.7.12-0ubuntu1 - (Ubuntu)
Protocol version: 10
User: szabolcs@localhost
Server charset: UTF-8 Unicode (utf8)
Web server
Apache/2.4.18 (Ubuntu)
Database client version: libmysql - mysqlnd 5.0.12-dev - 20150407 - $Id:
f59eb767fe17a6679589b5c076d9fa88d3d4eac0 $
PHP extension: mysqli curl mbstring
PHP version: 7.0.4-7ubuntu2.1
openssl
OpenSSL support enabled
OpenSSL Library Version OpenSSL 1.0.2g-fips 1 Mar 2016
OpenSSL Header Version OpenSSL 1.0.2g-fips 1 Mar 2016
Openssl default config /usr/lib/ssl/openssl.cnf
If you have to authenticate with certification you use mysqli_ssl_set(). In
this case you need private key and certification. But if you want only a
secure communication (like https) you don't need these. Only need
mysqli_client_ssl flag to use ssl.
...
From mysql log:
2016-06-03T06:02:02.098148Z11604 Connect        szabolcs@xxx.xxx.xxx.xxx on
 using SSL/TLS
Regards,
Szabolcs
Date: Thu, 2 Jun 2016 09:16:40 -0400
...
From: Isaac Bennetch bennetch@gmail.com
To: Developer discussion for phpMyAdmin developers@phpmyadmin.net
Subject: Re: [phpMyAdmin Developers] Connect with SSL
Message-ID: dc965fae-89cf-26a0-d22a-c3b7fab3f561@gmail.com
Content-Type: text/plain; charset=utf-8
Hi, thanks for your report and detailed research. Please see below...
On 6/2/16 8:24 AM, Kordován Szabolcs wrote:
...
Hi,
I had a problem with secure connection to sql server.
I use mysqli extension, I configured server['ssl'] = true. I have a user
'szabolcs' in sql who needs ssl.
First I received 'mysqli_real_connect(): (HY000/1045): Access denied for
user 'szabolcs'@'localhost' (using password: YES)'.
That was why PMA doesn't use MYSQLI_CLIENT_SSL. I should add it to
$client_flags.
As far as I'm aware, PHP doesn't need MYSQLI_CLIENT_SSL when calling
mysql_ssl_set() before mysqli_real_connect(). The current documentation
doesn't reference this scenario at all, but previous versions did state
that MYSQLI_CLIENT_SSL was not required here (see, for example, [1]).
...
After this I got the following error:'mysqli_query(): SSL operation
failed with code 1. OpenSSL Error messages: error:0607A082:digital
envelope routines:EVP_CIPHER_CTX_set_key_length:invalid key length
error:0607A082:digital envelope
routines:EVP_CIPHER_CTX_set_key_length:invalid key length'.
PMA uses openssel functions to encrypt values in cookie if openssl
functions exist, other case PMA uses Crypt\AES. With Crypt\AES PMA works
fine.
I don't know the exact source of this problem. I think openssl functions
have a bug.
There was some incompatibility between MySQL and OpenSSL (see [2]),
however the error reported was a bit different.
...
Because the mysqli connection with ssl is successful  After connection
in common.inc.php $auth_plugin->storeUserCredentials() is called. This
function stores the username and password and other parameters into
cookie. To encrypt:
openssl_encrypt(
                $data,
                'AES-128-CBC',
                $secret,
                0,
                $this->_cookie_iv
            );
I think the problem is that openssl_encrypt change the cipher to
AES-128-CBC globally. It means the cipher of mysqli connection is also
modified. This is why mysqli_query failed after encryption.
Interesting.
...
Here is my solution:
diff -ruN original/libraries/dbi/DBIMysqli.php
working/libraries/dbi/DBIMysqli.php

--- original/libraries/dbi/DBIMysqli.php        2016-05-25
19:07:44.000000000 +0200
+++ working/libraries/dbi/DBIMysqli.php 2016-05-26 15:55:49.000000000
+0200
...
@@ -152,6 +152,7 @@
     /* Optionally enable SSL */
     if ($cfg['Server']['ssl']) {


      $client_flags |= MYSQLI_CLIENT_SSL;
       mysqli_ssl_set(
           $link,
           $cfg['Server']['ssl_key'],



diff -ruN original/libraries/plugins/auth/AuthenticationCookie.php
working/libraries/plugins/auth/AuthenticationCookie.php
--- original/libraries/plugins/auth/AuthenticationCookie.php
 2016-05-25 19:07:44.000000000 +0200
+++ working/libraries/plugins/auth/AuthenticationCookie.php
2016-05-26 15:56:27.000000000 +0200
@@ -661,6 +661,7 @@
      */
     public static function useOpenSSL()
     {

  return false;



This also makes me think about some sort of OpenSSL problem.
...
     return (
         function_exists('openssl_encrypt')
         && function_exists('openssl_decrypt')

diff -ruN original/RELEASE-DATE-4.6.1 working/RELEASE-DATE-4.6.1
--- original/RELEASE-DATE-4.6.1 1970-01-01 01:00:00.000000000 +0100
+++ working/RELEASE-DATE-4.6.1  2016-05-02 17:24:00.000000000 +0200
@@ -0,0 +1 @@
+Mon May  2 21:23:35 UTC 2016
Regards,
Szabolcs

Developers mailing list
Developers@phpmyadmin.net
https://lists.phpmyadmin.net/mailman/listinfo/developers
...
From phpinfo() could you please provide your OpenSSL version? Mine is
1.0.1k.
...
From the main page of phpMyAdmin, could you please provide "Database
client version", "PHP extension", and "PHP version" information? (Mine
is libmysql - 5.5.49 / mysqli curl mbstring / 5.6.20-0+deb8u1 )
Regards,
Isaac
1 -
http://board.phpbuilder.com/showthread.php?10383611-Connecting-PHP-and-MYSQL...
2 - https://bugs.mysql.com/bug.php?id=64870

    