USN-3284-1: OpenVPN vulnerabilities

11 May 2017

openvpn vulnerabilities

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

  • Ubuntu 17.04

Summary

Several security issues were fixed in OpenVPN.

Software Description

  • openvpn - virtual private network software

Details

It was discovered that OpenVPN improperly triggered an assert when receiving an oversized control packet in some situations. A remote attacker could use this to cause a denial of service (server or client crash). (CVE-2017-7478)

It was discovered that OpenVPN improperly triggered an assert when packet ids rolled over. An authenticated remote attacker could use this to cause a denial of service (application crash). (CVE-2017-7479)

Update instructions

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

Ubuntu 17.04
openvpn - 2.4.0-4ubuntu1.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References