Thank you both, tobyink and kennethk, for the explanations. I have definitely learned from your comments.

UPDATE: Also instructive is an article -- cited in this (Mon, 2014-09-29) morning's Perlweekly -- by David Farrell. In essence, my view is both undermined and supported there:

As I now understand it, a BAD_ENV can be injected into the params passed to the server's CGI script, and (more-or-less) easily. But getting the malware into the server's environment requires -- at least as I now understand it -- that the server's owner/CGI-writer has failed to use taint to force the server-side code to effectively assess each of the params being provided by the outside user and prevent passage of meta-characters which are (TBO our current knowledge) required to make bash execute the malware writer's payload.

If I still have this wrong, pray continue my edumuckation....


++$anecdote ne $data


In reply to Re^7: Taint and Shellshock by ww
in thread Taint and Shellshock by kennethk

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