CVE-2019-10912: Prevent destructors with side-effects from being unserialized

More info at https://symfony.com/cve-2019-10912...

Remote Code Execution via Chosen-Ciphertext Attack

https://github.com/titon/framework/blob/cbf44729173d3a83b91a2b0a217c6b3827512e44/src/Titon/Crypto/OpenSslCipher.hhL30-L39 You aren't authenticating your ciphertexts, and then you're passing the decrypted result to unserialize. See also:...