Ubuntu 10.04 LTS / 10.10 / 11.04 / 11.10 : puppet vulnerability (USN-1238-1)

Ubuntu Security Notice (C) 2011-2016 Canonical, Inc. / NASL script (C) 2011-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

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 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.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected puppet-common package.

Risk factor :

Low / CVSS Base Score : 2.6
(CVSS2#AV:N/AC:H/Au:N/C:N/I:P/A:N)

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 56630 ()

Bugtraq ID:

CVE ID: CVE-2011-3872

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