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Ubuntu: pacchetti Puppet New risolvere le vulnerabilità di sicurezza

Si è scoperto che Puppet correttamente gestito la non-opzione predefinita "certdnsnames" durante la generazione di certificati. Se questa impostazione è stata aggiunta al puppet.conf, del maestro burattino nomi DNS alt sono stati aggiunti al campo X.509 Nome alternativo oggetto di tutti i certificati, non solo il certificato del burattinaio di. Un utente malintenzionato che ha un certificato inesatto agente in suo possesso può essere utilizzato per rappresentare il burattinaio in un uomo-in-the-middle. Pacchetti aggiornati sono disponibili presso security.ubuntu.com .

 ========================================================================== Ubuntu Security Notice USN-1238-1 October 24, 2011 puppet vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.10 - Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS Summary: The Puppet master server could be impersonated in certain configurations. Software Description: - puppet: Centralized configuration management 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 11.10: 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 LTS: puppet-common 0.25.4-2ubuntu6.5 In general, a standard system update will make all the necessary changes. If your puppet master's puppet.conf file has ever contained the "certdnsnames" setting, you must reissue your site certificates, or apply another mitigation technique. Please see the upstream advisory for more information: http://puppetlabs.com/security/cve/cve-2011-3872/ References: http://www.ubuntu.com/usn/usn-1238-1 CVE-2011-3872 Package Information: https://launchpad.net/ubuntu/+source/puppet/2.7.1-1ubuntu3.2 https://launchpad.net/ubuntu/+source/puppet/2.6.4-2ubuntu2.5 https://launchpad.net/ubuntu/+source/puppet/2.6.1-0ubuntu2.4 https://launchpad.net/ubuntu/+source/puppet/0.25.4-2ubuntu6.5