COMMAND
passwd
SYSTEMS AFFECTED
Win95
PROBLEM
Peter Moon discovered a major Windows 95 security hole. Internet
access passwords, once thought to be hidden by the operating
system, can be revealed in a few seconds by a program the size of
a digital thimble.
Access passwords are meant to ensure that only an account owner
can run up charges on an Internet account. Once a third party
knows your password, they can use your account from any computer,
surfing for hours at your expense, viewing your e-mail and even
sending messages under your name. Windows 95 can remember access
passwords so that you need not retype them every time you want to
dial up the Net. Probably the majority of dial-up account holders
use the feature. Why not? When Win95 stores the password, it
appears on the screen as nothing more than a row of asterisks.
The true password is hidden from sight. Well, was hidden from
sight. Hands On has located a tiny program that sees straight
through the asterisks and displays the underlying password --
instantly.
To learn your password, someone must have physical access to your
PC. Apart from one of the kids, or one of their school friends,
or your brother, or a co-worker, or a computer repair person, or
a student in your school, or one of your employees, Hands On
can't think of many people who have access to a PC that belongs
to another. And if that other's PC has a "hidden" Internet
password on it, any one of those persons might walk away with a
copy in their pocket.
The program can run from a floppy disk and takes up so little room
that it could be buried among dozens of innocent files. Someone
who borrows your PC to print out an innocuous letter could view
your password in far less time than a page takes to print. Your
account key could be spirited out while you are a few feet away.
Because it doesn't need to be installed on the target PC, it
leaves no footprint. Subsequent examination of the machine won't
give any hint as to whether passwords have been leached out.
Info on this was based on:
http://www.afr.com.au/content/970822/inform/inhands.html
SOLUTION
The fix is easy, but you will have to enter your access password
every time you dial your service provider: tell Win95 not to save
your password. The option is set by a check box that appears when
you click on the dial-up icon.