COMMAND
printer share
SYSTEMS AFFECTED
Win 95, 98
PROBLEM
Jiva DeVoe found following. In Windows95 and Windows98 sharing a
printer creates a share called PRINTER$ This share is READ-ONLY
but requires NO password to access it. It would be less of an
issue if the user were warned, or if the printer password applied
to the share, but it doesn't. This share is a FILE share that
points to your SYSTEM directory. So what this means is that,
sharing a printer on a win95/98 machine connected to the internet
gives READ ACCESS to your system directory with NO PASSWORD and
NO OPTION TO DISABLE IT.
This was tested and confirmed this to be an issue in Windows95
version A but not OSR2 or with any patches installed. Also, it is
confirmed that Release to Manufacturing version of Win98 is
vulnerable too.
To reproduce it: Just share a printer, then have someone else
connect to \\yourmachine\printer$ and watch your system directory
come up in all it's glory.
SOLUTION
Obviously, the answer here is not to put anything remotely private
in \windows\system.