From the current perl INSTALL file:

"Because of the buggy history of suidperl, and the difficulty
of properly security auditing as large and complex piece of
software as Perl, we cannot recommend using suidperl and the feature
should be considered deprecated.

Instead use for example 'sudo': http://www.courtesan.com/sudo/";

Suidperl is dead. Let's let it die.

Which brings me to the point that running stuff setuid, especially scripts, is difficult for a reason -- people have been bitten time and time again.

You would never find a construction like this in, for example, OpenBSD, because it's inherently insecure, whether you've got the race condition bug or not.

Anyway, I'm not going to mess around with this anymore -- I'm using the C wrapper. The one comfort I can take from this discussion is that it will be archived, so that other people can be spared this grief.

-Stephen-



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