USN-3339-2: OpenVPN vulnerability

7 August 2017

openvpn vulnerability

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

  • Ubuntu 12.04 ESM


Several security issues were fixed in OpenVPN.

Software Description

  • openvpn - virtual private network software


USN-3339-1 fixed several issues in OpenVPN. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Guido Vranken discovered that OpenVPN incorrectly handled an HTTP proxy with NTLM authentication. A remote attacker could use this issue to cause OpenVPN clients to crash, resulting in a denial of service, or possibly expose sensitive memory contents. (CVE-2017-7520)

Update instructions

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

Ubuntu 12.04 ESM
openvpn - 2.2.1-8ubuntu1.5

To update your system, please follow these instructions:

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