Guide to writing secure setuid programs?

[Tony L. Hansen]

<	3. Remove files from the directory.
<
< #3 can be absolutely prevented on BSD 4.3 systems by setting the sticky
< bit (mode 1733) on the directory.

This enhancement was also put into System V release 3.2. Also, the /tmp and
/usr/tmp directories are shipped as mode 1777. This was just one of the
modifications made in that release to make the UNIX System more secure.

					Tony Hansen
				ihnp4!pegasus!hansen, attmail!tony