Puppet 2.7.x before 2.7.21 and 3.1.x before 3.1.1, and Puppet Enterprise 2.7.x before 2.7.2, does not properly negotiate the SSL protocol between client and master, which allows remote attackers to conduct SSLv2 downgrade attacks against SSLv3 sessions via unspecified vectors.
https://puppetlabs.com/security/cve/cve-2013-1654/
http://www.securityfocus.com/bid/64758
http://www.debian.org/security/2013/dsa-2643
http://ubuntu.com/usn/usn-1759-1
http://secunia.com/advisories/52596
http://rhn.redhat.com/errata/RHSA-2013-0710.html
http://lists.opensuse.org/opensuse-updates/2013-04/msg00056.html
http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00004.html