==========================================================================
Ubuntu Security Notice USN-7416-1
April 07, 2025

kamailio vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Kamailio.

Software Description:
- kamailio: very fast, dynamic and configurable SIP server

Details:

Stelios Tsampas discovered that Kamailio did not correctly handle certain
memory operations, which could lead to a buffer overflow. A remote attacker
could possibly use this issue to cause a denial of service or execute
arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-2385)

Henning Westerholt discovered that Kamailio did not correctly handle
duplicated headers, which could lead to a segmentation fault. A remote
attacker could possibly use this issue to cause a denial of service or
execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and
Ubuntu 18.04 LTS. (CVE-2018-14767)

It was discovered that Kamailio did not correctly handle parsing certain
headers containing whitespace characters. An authenticated attacker could
possibly use this issue to gain access to unauthorized resources and
expose sensitive information. This issue only affected Ubuntu 18.04 LTS
and Ubuntu 20.04 LTS. (CVE-2020-28361)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS
  kamailio                        5.3.2-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  kamailio                        5.1.2-1ubuntu2+esm2
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  kamailio                        4.3.4-1.1ubuntu2.1+esm2
                                  Available with Ubuntu Pro

After a standard system update you need to restart Kamailio to make
all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7416-1
  CVE-2016-2385, CVE-2018-14767, CVE-2020-28361