Ubuntu Security Notice 2077-2 - USN-2077-1 fixed a vulnerability in Puppet. The upstream patch introduced a regression resulting in the default file mode being incorrect. This update fixes the problem. It was discovered that Puppet incorrectly handled temporary files. A local attacker could possibly use this issue to overwrite arbitrary files. In the default installation of Ubuntu, this should be prevented by the Yama link restrictions. Various other issues were also addressed.
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Ubuntu Security Notice USN-2077-2
January 09, 2014
puppet regression
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
Summary:
USN-2077-1 introduced a regression in Puppet.
Software Description:
- puppet: Centralized configuration management
Details:
USN-2077-1 fixed a vulnerability in Puppet. The upstream patch introduced a
regression resulting in the default file mode being incorrect. This update
fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Puppet incorrectly handled temporary files. A local
attacker could possibly use this issue to overwrite arbitrary files. In the
default installation of Ubuntu, this should be prevented by the Yama link
restrictions.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 13.10:
puppet-common 3.2.4-2ubuntu2.3
Ubuntu 13.04:
puppet-common 2.7.18-4ubuntu1.4
Ubuntu 12.10:
puppet-common 2.7.18-1ubuntu1.5
Ubuntu 12.04 LTS:
puppet-common 2.7.11-1ubuntu2.7
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2077-2
http://www.ubuntu.com/usn/usn-2077-1
https://launchpad.net/bugs/1267385
Package Information:
https://launchpad.net/ubuntu/+source/puppet/3.2.4-2ubuntu2.3
https://launchpad.net/ubuntu/+source/puppet/2.7.18-4ubuntu1.4
https://launchpad.net/ubuntu/+source/puppet/2.7.18-1ubuntu1.5
https://launchpad.net/ubuntu/+source/puppet/2.7.11-1ubuntu2.7