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Puppet vulnerability

Description

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’s 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.


Affected Package


OS OS Version Package Name Package Version
Ubuntu 11.10 puppet-common 2.7.1-1ubuntu3.2
Ubuntu 11.04 puppet-common 2.6.4-2ubuntu2.5
Ubuntu 10.10 puppet-common 2.6.1-0ubuntu2.4
Ubuntu 10.04 puppet-common 0.25.4-2ubuntu6.5

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