The Security component in Symfony 2.0.x before 2.0.25, 2.1.x before 2.1.13, 2.2.x before 2.2.9, and 2.3.x before 2.3.6 allows remote attackers to cause a denial of service (CPU consumption) via a long password that triggers an expensive hash computation, as demonstrated by a PBKDF2 computation, a similar issue to CVE-2013-5750.
The Yaml::parse function in Symfony 2.0.x before 2.0.22 remote attackers to execute arbitrary PHP code via a PHP file, a different vulnerability than CVE-2013-1397.
Symfony 2.0.x before 2.0.22, 2.1.x before 2.1.7, and 2.2.x remote attackers to execute arbitrary PHP code via a serialized PHP object to the (1) Yaml::parse or (2) Yaml\Parser::parse function, a different vulnerability than CVE-2013-1348.
Symfony 2.0.x before 2.0.20 does not process URL encoded data consistently within the Routing and Security components, which allows remote attackers to bypass intended URI restrictions via a doubly encoded string.
Symfony 2.0.x before 2.0.20, 2.1.x before 2.1.5, and 2.2-dev, when the internal routes configuration is enabled, allows remote attackers to access arbitrary services via vectors involving a URI beginning with a /_internal substring.