Re: TrojanHorse with Mozilla / Firefox

Użytkownik Daniel Veditz napisał:
> Dirk wrote:
> 
> 
>>a website tries to install the following software
>>     http://www2.flingstone.com/cab/sbc_netscape.xpi
>>if you d/l the xpi and expand the zip file your anti virus program will 
>>alert you with something like... "keylog-briss" Trojan horse detected
> 
> 
> We've noticed attempts like this recently and are taking steps to address
> it. As a first stop-gap, sites are no longer be able to launch installs
> during page load (easy to work around, but a quick band-aid to specific
> abuses we've seen). This is already in recent nightlies of Firefox and
> Mozilla. Second, at the cost of greatly reducing the usefulness of
> XPInstall, we're restricting its use to whitelisted sites or else people can
> explicitly download the file and then launch it (as they can do with an .exe
> install).

So this is why in newest rc's of Mozilla and firefox I am not able to 
install any .xpi files? Coworker told me that he gets immediate "user 
cancel" in installation script.
Up to now we had behavior that is consistent with ActiveX installation 
under IE, and even XP SP2 shows nice and wisible warning when it blocks 
ActiveX control (so that the user knows what's going on and can easily 
allow it for that specific site, we are ok with that), with newest 
Firefox it just silently fails. Is there any way aroud this?
If not how to differentiate between Mozilla browsers that do it the old 
way and the new ones?

> 
> 
>>You can turn the software installation off on Mozilla but not in the 
>>FireFox preferences.
> 
> 
> you can turn it off manually through about:config, and I believe UI is being
> added as part of the new "Extension Manager" interface going into 0.9


Is it possible to check that setting from JavaScript on webpage? FireFox 
users are generally much more educated when it goes to browser config 
than IE users but it would still be nice if I could somehow inform them 
what specific setting prevents automatic xpi installation. If it just 
fails without warning or info of any kind it's quite a problem for me 
(my company develops online gaming portal with currently _tens_ of xpi 
game plugins).

> 
> 
>>I think most people believe they have no virus problems with 
>>Mozilla/FireFox but that's not true...
> 
> 
> This still requires the user to agree to install something on their machine
> so it's not exactly a virus or worm, but probably too many people could
> fooled into installing it. That's why we're changing things.
> 
> -Dan Veditz