=========================================================================Ubuntu Security Notice USN-2628-1
June 08, 2015

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

- Ubuntu 15.04
- Ubuntu 14.10
- Ubuntu 14.04 LTS

Summary:

strongSwan could be made to expose sensitive information over the network.

Software Description:
- strongswan: IPsec VPN solution

Details:

Alexander E. Patrakov discovered that strongSwan incorrectly handled
certain IKEv2 setups. A malicious server could possibly use this issue to
obtain user credentials.

Update instructions:

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

Ubuntu 15.04:
  strongswan-ike                  5.1.2-0ubuntu5.2

Ubuntu 14.10:
  strongswan-ike                  5.1.2-0ubuntu3.3

Ubuntu 14.04 LTS:
  strongswan-ike                  5.1.2-0ubuntu2.3

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

References:
  https://ubuntu.com/security/notices/USN-2628-1
  CVE-2015-4171

Package Information:
  https://launchpad.net/ubuntu/+source/strongswan/5.1.2-0ubuntu5.2
  https://launchpad.net/ubuntu/+source/strongswan/5.1.2-0ubuntu3.3
  https://launchpad.net/ubuntu/+source/strongswan/5.1.2-0ubuntu2.3