what are the implications of shell doing setuid(getuid())?

[Tony L. Hansen]

I was recently asked what the implications would be of having the shell do a
setuid(getuid()) and setgid(getgid()) as soon as it's invoked. The reason is
to try and plug up any security holes caused by set[ug]id programs that
invoke system(3C) or popen(3S). What tools are there that anyone knows of
that would be broken if this change were made, locally, or for real?

					Tony Hansen
					ihnp4!pegasus!hansen