USN-5347-1: OpenVPN vulnerability

Publication date

24 March 2022

Overview

OpenVPN could allow unintended access to network services.


Packages

  • openvpn - virtual private network software

Details

It was discovered that OpenVPN incorrectly handled certain configurations
with multiple authentication plugins. A remote attacker could possibly use
this issue to bypass authentication using incomplete credentials.

It was discovered that OpenVPN incorrectly handled certain configurations
with multiple authentication plugins. A remote attacker could possibly use
this issue to bypass authentication using incomplete credentials.

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
21.10 impish openvpn –  2.5.1-3ubuntu1.1
20.04 focal openvpn –  2.4.7-1ubuntu2.20.04.4
18.04 bionic openvpn –  2.4.4-2ubuntu1.7

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.


Have additional questions?

Talk to a member of the team ›