Public bug reported:

This bug is relevant for:
Description:    Ubuntu 18.04.2 LTS
Release:        18.04

The officially published version from Ubuntu Updates of the openssl
package is 1.1.1:
https://launchpad.net/ubuntu/+source/openssl/1.1.1-1ubuntu2.1~18.04.4.

<pre>
openssl:
  Installiert:           1.1.0g-2ubuntu4.3
  Installationskandidat: 1.1.1-1ubuntu2.1~18.04.4
  Versionstabelle:
 *** 1.1.1-1ubuntu2.1~18.04.4 500
        500 http://de.archive.ubuntu.com/ubuntu bionic-updates/main amd64 
Packages
     1.1.0g-2ubuntu4.3 500
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 
Packages
        100 /var/lib/dpkg/status
     1.1.0g-2ubuntu4 500
        500 http://de.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
</pre>

The kamailio-tls-modules, however, is compiled with OpenSSL 1.1.0g 2 Nov
2017 (I took this entry from the system log).

<pre>
kamailio-tls-modules:
  Installiert:           5.1.2-1ubuntu2
  Installationskandidat: 5.1.2-1ubuntu2
  Versionstabelle:
 *** 5.1.2-1ubuntu2 500
        500 http://de.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
</pre>

This leads to Kamailio not being able to start at all as it complains
about the openssl versions being too different from each other:

<pre>
CRITICAL: tls [tls_init.c:671]: init_tls_h(): installed openssl library version 
is too different from the library the kamailio tls module was compiled with: 
installed "OpenSSL 1.1.1  11 Sep 2018" (0x1010100f), compiled "OpenSSL 1.1.0g  
2 Nov 2017" (0x1010007f).#012 Please make sure a compatible version is used
</pre>

This (checking) behaviour can be overridden, however, this does not
solve the problem as it results in hard crashes (of Kamailio).

This is unexpected behaviour and a bug as the kamailio-tls-module won't
run unless it's compiled with the openssl version used at runtime.
Therefore, it's not possible to use TLS encryption with Kamailio at the
time.

Please consider recompiling the kamailio-tls-modules package with the
openssl version currently published by Ubuntu Updates, OpenSSL 1.1.1  11
Sep 2018" (0x1010100f).

** Affects: kamailio (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bionic

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https://bugs.launchpad.net/bugs/1838201

Title:
  Kamalio TLS modules package compiled with outdated OpenSSL version

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