No, I'm not restarting the browser wars. They have been fought and lost.
Let's look at a recently published exploit though:
When Firefox installs on windows, it installs itself as a URL handler. In pseudo code the handler that is added looks like:
Now what happens if %1 contains a double quote?
So where does IE come into play against Firefox ?
As a result the IE user on a machine that has Firefox installed is at risk.
A workaround is to remove the URL handlers installed by Firefox from the registry. I'm sure the developers of Firefox can undo the damage done to systems in a next patch.
This however goes to show that even unused but installed client programs might be a threat on your client system. Hence you need to take care of vulnerabilties in software that you don't even use.
Jul 10th 2007
1 decade ago