=========================================================================Ubuntu Security Notice USN-2593-1
May 04, 2015

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

- Ubuntu 15.04
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Dnsmasq could be made to crash or expose sensitive information if it
received specially crafted network traffic.

Software Description:
- dnsmasq: Small caching DNS proxy and DHCP/TFTP server

Details:

Nick Sampanis discovered that Dnsmasq incorrectly handled certain malformed
DNS requests. A remote attacker could use this issue to cause Dnsmasq to
crash, resulting in a denial of service, or possibly obtain sensitive
information.

Update instructions:

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

Ubuntu 15.04:
  dnsmasq-base                    2.72-3ubuntu0.1

Ubuntu 14.10:
  dnsmasq-base                    2.71-1ubuntu0.1

Ubuntu 14.04 LTS:
  dnsmasq-base                    2.68-1ubuntu0.1

Ubuntu 12.04 LTS:
  dnsmasq                         2.59-4ubuntu0.2
  dnsmasq-base                    2.59-4ubuntu0.2
  dnsmasq-utils                   2.59-4ubuntu0.2

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-2593-1
  CVE-2015-3294

Package Information:
  https://launchpad.net/ubuntu/+source/dnsmasq/2.72-3ubuntu0.1
  https://launchpad.net/ubuntu/+source/dnsmasq/2.71-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/dnsmasq/2.68-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/dnsmasq/2.59-4ubuntu0.2