Ticketbleed is a software vulnerability in the TLS stack of certain F5 products that allows a remote attacker the ability to extract up to 31 bytes of uninitialized memory at a time, which can contain any kind of random sensitive information, like in Heartbleed.
669dc4759a3f8fc7d705e8d378a7374aa8ecb2569e1b4a7d4d775e646c0a12ff