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

Ubuntu Security Notice (C) 2011-2013 Canonical, Inc. / NASL script (C) 2011-2013 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 masterâs DNS alt names were
added to the X.509 Subject Alternative Name field of all certificates,
not just the puppet masterâs 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.

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