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USN-1238-2: Puppet regression

25 October 2011

USN-1238-1 caused a regression on Ubuntu 11.04.

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Releases

Packages

  • puppet - Centralized configuration management

Details

USN-1238-1 fixed vulnerabilities in Puppet. The upstream patch introduced a
regression in Ubuntu 11.04 when executing certain commands. This update
fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Puppet incorrectly handled the non-default
"certdnsnames" option when generating certificates. If this setting was
added to puppet.conf, the puppet primary server’s DNS alt names were
added to the X.509 Subject Alternative Name field of all certificates,
not just the puppet primary server’ certificate. An attacker that has an
incorrect agent certificate in his possession can use it to impersonate
the puppet primary server in a machine-in-the-middle attack.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 11.04

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