Hi Anthony:

In message <405313549.20170421175726@inbox.ru>, Anthony writes:
>Nevertheless,  John, are you sure that adding pass_headers option is a
>really good idea?
>
>Do the passing all http headers like others programs do and
>which is conformed to http/cgi standard is a bad thing?

Well we had https://httpoxy.org/ and there is an open ticket for this:

    http://issues.roundup-tracker.org/issue2550925

so I would say yes there can be exploits. I also hope that no program
in the future will use HTTP_* as an environment variable but....

Also didn't the shellshock bash bug depend on creating a specially
crafted environment variable?

>In this topic I see only one cons: "programming for safety
>usually means to only let variables (or values if this applies)
>pass through that are on a whitelist".

Yup, that's where pass_headers came from. It's the whitelist.

Have a great weekend.
--
				-- rouilj
John Rouillard
===========================================================================
My employers don't acknowledge my existence much less my opinions.