AST-2009-003: SIP responses expose valid usernames

               Asterisk Project Security Advisory - AST-2009-003

   +------------------------------------------------------------------------+
   |      Product       | Asterisk                                          |
   |--------------------+---------------------------------------------------|
   |      Summary       | SIP responses expose valid usernames              |
   |--------------------+---------------------------------------------------|
   | Nature of Advisory | Information leak                                  |
   |--------------------+---------------------------------------------------|
   |   Susceptibility   | Remote Unauthenticated Sessions                   |
   |--------------------+---------------------------------------------------|