1. Ubuntu Security Notices
  2. USN-6022-1

USN-6022-1: Kamailio vulnerabilities

Publication date

14 April 2023

Overview

Kamailio could be made to crash or run programs if it received specially crafted input.

Releases

Packages

  • kamailio - very fast, dynamic and configurable SIP server

Details

It was discovered that Kamailio did not properly sanitize SIP messages under
certain circumstances. An attacker could use this vulnerability to cause a
denial of service or possibly execute arbitrary code. This issue only affected
Ubuntu 16.04 ESM and 18.04 ESM. (CVE-2018-16657)

It was discovered that Kamailio did not properly validate INVITE requests
under certain circumstances. An attacker could use this vulnerability to
cause a denial of service or possibly execute arbitrary code. (CVE-2020-27507)

It was discovered that Kamailio did not properly sanitize SIP messages under
certain circumstances. An attacker could use this vulnerability to cause a
denial of service or possibly execute arbitrary code. This issue only affected
Ubuntu 16.04 ESM and 18.04 ESM. (CVE-2018-16657)

It was discovered that Kamailio did not properly validate INVITE requests
under certain circumstances. An attacker could use this vulnerability to
cause a denial of service or possibly execute arbitrary code. (CVE-2020-27507)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal kamailio –  5.3.2-1ubuntu0.1~esm1  
18.04 bionic kamailio –  5.1.2-1ubuntu2+esm1  
16.04 xenial kamailio –  4.3.4-1.1ubuntu2.1+esm1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›