Re: Hijacking Apache 2 via mod_perl

3APA3A wrote:

> Dear Ben Laurie,
>
> --Thursday, January 22, 2004, 6:53:01 PM, you wrote to linux_4ever_at_yahoo.com:
>
> BL> This is not a leak - mod_perl is a module that is compiled into Apache,
> BL> and hence has access to all its resources (including memory). If you
> BL> want to run untrusted Perl, then don't use mod_perl.
>
> You're right: mod_perl is inside apache memory space and can access any
> descriptor, so it's impossible to blame apache descriptor is leaked. But
> you're wrong. mod_perl has access to memory, not perl script. At least,
> it's possible to store descriptors table and implement check for
> descriptor in every perl file/socket function inside mod_perl (and
> mod_php and mod_something) and only allow access to std descriptors and
> to descriptors open inside same script. The choice is between speed and
> security.

OK, you _might_ be able to do this (but I'll bet you five beers you'll
never make Perl secure enough to avoid circumvention), and I doubt it'd
even noticably impact speed. This is not something Apache can fix, though.

Cheers,

Ben.

-- 
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