alt Hacker NewsAnother example for why system() is so dangerous to use.
I also don't understand why it needs to show the dialog in dom0. If you have the option to handle attacker controlled input on the unprivileged side, you should do that instead of putting a lot of logic on the privileged side.
Replies
HackerThemAll • today at 10:11 AM
> why it needs to show the dialog in dom0
I think it's the "secure screen" that cannot be manipulated by the malware in a VM. I'd expect a password entry dialog to also be handled like that.
➕ show 2 replies
The code is sloppy. They check existance of kdialog binary using full path; next step they rely on PATH search by shell. If would've been much safer to just do execve directly.