> ww posted an article that comes to similar conclusions to yours.

CAUTION! DON'T

While the explanation in the article is good, the regex is not.

While I disable ALL function definitions to avoid any eval, this one tries to disable only those containing injected code after the functions body.

In other words it tries to parse the function, but similar to "only Perl can parse Perl" this is doomed to fail.

I've already seen shellshock exploits where the injected code was somewhere within the body. ¹

If you wanna play save disable all unknown function definitions like I did and allow only some where you have full control!

Cheers Rolf

(addicted to the Perl Programming Language and ☆☆☆☆ :)

¹) parsing complexity is the reason why there are so many patching attempts to fix this

In reply to Re^5: Taint and Shellshock by LanX
in thread Taint and Shellshock by kennethk

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