Articles / Ubuntu: New Nut packages fi…

Ubuntu: New Nut packages fix security vulnerabilities

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). Updated packages are available from security.ubuntu.com.

==========================================================================
Ubuntu Security Notice USN-1456-1
May 31, 2012

nut vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS

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).

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.

References:
 http://www.ubuntu.com/usn/usn-1456-1
 CVE-2012-2944

Package Information:
 https://launchpad.net/ubuntu/+source/nut/2.6.3-1ubuntu1.1
 https://launchpad.net/ubuntu/+source/nut/2.6.1-2ubuntu2.1
 https://launchpad.net/ubuntu/+source/nut/2.6.0-1ubuntu3.1
 https://launchpad.net/ubuntu/+source/nut/2.4.3-1ubuntu3.2
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