Puppet 2.7.x before 2.7.22 and 3.2.x before 3.2.2, and Puppet Enterprise before 2.8.2, deserializes untrusted YAML, which allows remote attackers to instantiate arbitrary Ruby classes and execute arbitrary code via a crafted REST API call.

The default configuration for puppet masters 0.25.0 and later in Puppet before 2.6.18, 2.7.x before 2.7.21, and 3.1.x before 3.1.1, and Puppet Enterprise before 1.2.7 and 2.7.x before 2.7.2, allows remote authenticated nodes to submit reports for other nodes via unspecified vectors.

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.

Puppet before 2.6.18, 2.7.x before 2.7.21, and 3.1.x before 3.1.1, and Puppet Enterprise before 1.2.7 and 2.7.x before 2.7.2, when listening for incoming connections is enabled and allowing access to the "run" REST endpoint is allowed, allows remote authenticated users to execute arbitrary code via a crafted HTTP request.

Puppet before 2.6.18, 2.7.x before 2.7.21, and 3.1.x before 3.1.1, and Puppet Enterprise before 1.2.7 and 2.7.x before 2.7.2 allows remote authenticated users with a valid certificate and private key to read arbitrary catalogs or poison the master's cache via unspecified vectors.

Puppet 2.7.x before 2.7.21 and 3.1.x before 3.1.1, when running Ruby 1.9.3 or later, allows remote attackers to execute arbitrary code via vectors related to "serialized attributes."