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Ubuntu Security Notice USN-2484-1
January 26, 2015
unbound vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.10
– Ubuntu 14.04 LTS
Summary:
Unbound could be made to consume resources if it received specially crafted
network traffic.
Software Description:
– unbound: validating, recursive, caching DNS resolver
Details:
Florian Maury discovered that Unbound incorrectly handled delegation. A
remote attacker could possibly use this issue to cause Unbound to consume
resources, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.10:
libunbound2 1.4.22-1ubuntu4.14.10.1
unbound 1.4.22-1ubuntu4.14.10.1
Ubuntu 14.04 LTS:
libunbound2 1.4.22-1ubuntu4.14.04.1
unbound 1.4.22-1ubuntu4.14.04.1
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2484-1
CVE-2014-8602
Package Information:
https://launchpad.net/ubuntu/+source/unbound/1.4.22-1ubuntu4.14.10.1
https://launchpad.net/ubuntu/+source/unbound/1.4.22-1ubuntu4.14.04.1
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