Puppet Module Tool (PMT), as used in Puppet 2.7.x before 2.7.23 and 3.2.x before 3.2.4, and Puppet Enterprise 2.8.x before 2.8.3 and 3.0.x before 3.0.1, installs modules with weak permissions if those permissions were used when the modules were originally built, which might allow local users to read or modify those modules depending on the original permissions.

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.

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 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."

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 allows remote authenticated users with a valid certificate and private key to read arbitrary catalogs or poison the master's cache via unspecified vectors.

lib/puppet/ssl/certificate_authority.rb in Puppet before 2.6.17 and 2.7.x before 2.7.18, and Puppet Enterprise before 2.5.2, does not properly restrict the characters in the Common Name field of a Certificate Signing Request (CSR), which makes it easier for user-assisted remote attackers to trick administrators into signing a crafted agent certificate via ANSI control sequences.

Puppet before 2.6.17 and 2.7.x before 2.7.18, and Puppet Enterprise before 2.5.2, allows remote authenticated users to read arbitrary files on the puppet master server by leveraging an arbitrary user's certificate and private key in a GET request.

lib/puppet/defaults.rb in Puppet 2.7.x before 2.7.18, and Puppet Enterprise before 2.5.2, uses 0644 permissions for last_run_report.yaml, which allows local users to obtain sensitive configuration information by leveraging access to the puppet master server to read this file.