USN-1238-2: Puppet regression

Releases

• Ubuntu 11.04

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.

Update instructions

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

Ubuntu 11.04

• puppet-common - 2.6.4-2ubuntu2.6

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

References

• https://launchpad.net/bugs/881361