Ubuntu Security Notice 408-1 – The server-side portion of Kerberos’ RPC library had a memory management flaw which allowed users of that library to call a function pointer located in unallocated memory. By doing specially crafted calls to the kadmind server, a remote attacker could exploit this to execute arbitrary code with root privileges on the target computer.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/53685/USN-408-1.txt
Source: https://packetstormsecurity.com/files/53685/Ubuntu-Security-Notice-408-1.html