Is it possible to patch/recompile FreeBSD 4.5 in such a way that your
system is no longer vulnerable to the "chunking" attack, even if you are
still running a vulnerable apache ?

I ask because I see in one of the chunking exploits that:

* Remote OpenBSD/Apache exploit for the "chunking" vulnerability. Kudos to
 * the OpenBSD developers (Theo, DugSong, jnathan, *@#!w00w00, ...) and
 * their crappy memcpy implementation that makes this 32-bit impossibility
 * very easy to accomplish.

Which leads me to believe there are structures in the OS which "help" this
vulnerability to exist.  I am _very_ interested to find out if it is
possible to patch this bug at the FreeBSD OS level and not the apache
level.

thanks,

PT




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