Ubuntu 1238-2: Puppet regression

    Date 25 Oct 2011
    Posted By LinuxSecurity Advisories
    USN-1238-1 caused a regression on Ubuntu 11.04.
    Ubuntu Security Notice USN-1238-2
    October 25, 2011
    puppet regression
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 11.04
    USN-1238-1 caused a regression on Ubuntu 11.04.
    Software Description:
    - puppet: Centralized configuration management
    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 master’s DNS alt names were added to the
     X.509 Subject Alternative Name field of all certificates, not just the
     puppet master’s certificate. An attacker that has an incorrect agent
     certificate in his possession can use it to impersonate the puppet master
     in a man-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.
    Package Information:

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