USN-3284-1: OpenVPN vulnerabilities

Ubuntu Security Notice USN-3284-1

11th 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 version:

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

CVE-2017-7478, CVE-2017-7479