That is an ooooold ASDM (4 years old, kind of like a Windows XP of ASDMs ). Which version you can upgrade to depends on what ASA software your system is running. However updating requires a support contract (Smartnet). Do you have that?
Aside from that, if you can get in via console ports, you should see a command in your configuration like:
aaa authentication http console LOCAL
If not add it and a local username (conf t and then that command, then "username password privilege 15 "then "exit" and "write mem").
Try logging back into ASDM using that new username and password.