haven't you ever heard of script-kiddies? they are by far the majority of
attacks on systems but do not have the expertise to create exploits. it
takes someone else writing the exploit for them and packaging it to make
them a threat.
in the meantime there's a chance for the fix to get propogated out to a
released version and for people to upgrade their systems. providing
exploit code along with the bugfix means that the script kiddies have the
exploit immediatly, but the fix isn't in any released version (not even a
-rc or daily -git snapshot)
this depends on how you define threat.
how many people run exploits against their production systems to 'see if
they are fixed', very few, and those only on strict schedules with lots of
adnvance notice and other safeguards.
David Lang
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