Ubuntu 12.04 LTS: USN-1456-1 Moderate Vulnerability in Nut DoS Risk

ubuntu

May 31, 2012

Nut could be made to crash if it received specially crafted network traffic.

Summary

Nut could be made to crash if it received specially crafted network

traffic.

Software Description:

- nut: Network UPS tools

Details:

Sebastian Pohle discovered that Nut did not properly validate its input

when receiving data over the network. If upsd was configured to allow

connections over the network, a remote attacker could exploit this to

cause a denial of service (application crash).

Topics Covered

security advisory moderate denial of service ubuntu network attack nut

Update Instructions

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

Ubuntu 12.04 LTS:
  nut-server                      2.6.3-1ubuntu1.1

Ubuntu 11.10:
  nut-server                      2.6.1-2ubuntu2.1

Ubuntu 11.04:
  nut                             2.6.0-1ubuntu3.1

Ubuntu 10.04 LTS:
  nut                             2.4.3-1ubuntu3.2

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