[UPHPU] Using exec() to ping?

[dataw0lf]

dataw0lf wrote:

>
>
> No.  It's not a problem with actually executing the file.  It's a 
> problem with permissions inside the ping program to access a raw 
> socket.  Since the dawn of Unix time, you've had to be root to invoke 
> a raw socket.  This means that normally, if you execute a program as a 
> normal user, you won't have those permissions.  However, the suid bit 
> forces the applicable program to run under the OWNER of the program 
> (obviously, in this case, root), giving it the permissions inherent 
> with that owner.  Basically, it's a way to tell the ping program to 
> hijack itself to be run as root, and then return to the executing owner.

That last 'owner' should be 'user'.  Don't want to confuse anyone.  Hope 
this explanation helps.