COMMAND

    guest account

SYSTEMS AFFECTED

    IRIX (all versions)

PROBLEM

    SGI (Irix) has feature that will  allow bad people to bad to  your
    system.   The  "guest"  account  exists  without password on every
    IRIX system by default.

SOLUTION

    Give "guest"  account password  or if  it is  useless, remove that
    user.