Re: DotClear Full Path Disclosure Vulnerability

[Raphaël HUCK <raphael.huck@xxxxxxx>]

> > They should check that a certain variable is defined for example, and if 
> > not, do not display anything... even if the hosted website is configured 
> > to display errors, and you cannot change this.
>
> Exactly my point: you may not have the choice of your PHP configuration.

I said I agreed with you. But you can use secure software (or modify the 
unsecure ones you have), so that they don't enable a full path 
disclosure, even if you don't have the choice of your PHP configuration! 
Can't you? ;)

> Note that checking a variable is set may note be the best solution as
> attacker can provide it as well ;)

I said "for example", as I know this is how MediaWiki does:

if ( ! defined( 'MEDIAWIKI' ) )
    die( 1 );

How would you do it?