Re: nmap from PHP script.

[Vlatko Kosturjak <kost () linux hr>]

On 02/15/2011 03:12 PM, Daniel Cba. wrote:
> hello people
> when I run nmap from a php script finds 26 hosts 
>  
> <?php
> $output = shell_exec('nmap -sP 10.101.154.1-255');
> echo "<pre>$output</pre>";
> ?> 
>  
> Nmap done: 255 IP addresses (26 hosts up) scanned in 8.62 seconds
>
> and from command line finds 104 host
> #root>nmap -sP 10.101.154.1-255
>  
> Nmap done: 255 IP addresses (104 hosts up) scanned in 5.43 seconds

Seems like permission/user rights problem. PHP scripts usually run under
low-privilege user while in command line you're running as root.

Quick fix would be putting setuid on nmap: chmod +s nmap
But, you should be aware of security implications of that. Especially if
you're taking user input from web and forwarding it to nmap (with root
rights!!!). In short, it is security disaster waiting to happen (just
take look at --interactive option description!).

Kost
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