Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities - Nessus

Critical Plugin ID: 119500

This page contains detailed information about the Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities 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: 119500
Name: Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities
Filename: jenkins_2_154.nasl
Vulnerability Published: 2018-12-05
This Plugin Published: 2018-12-07
Last Modification Time: 2022-04-11
Plugin Version: 1.10
Plugin Type: combined
Plugin Family: CGI abuses
Dependencies: jenkins_detect.nasl, jenkins_nix_installed.nbin, jenkins_win_installed.nbin, macosx_jenkins_installed.nbin
Required KB Items [?]: installed_sw/Jenkins

Vulnerability Information

Severity: Critical
Vulnerability Published: 2018-12-05
Patch Published: 2018-12-05
CVE [?]: CVE-2018-1000861, CVE-2018-1000862, CVE-2018-1000863, CVE-2018-1000864
CPE [?]: cpe:/a:cloudbees:jenkins

Synopsis

A job scheduling and management system hosted on the remote web server is affected by multiple vulnerabilities.

Description

The version of Jenkins running on the remote web server is prior to 2.154 or is a version of Jenkins LTS prior to 2.138.4 or 2.150.1. It is, therefore, affected by multiple vulnerabilities:

- A command execution vulnerability exists in the Stapler web framework used in Jenkins due to certain methods being invoked via crafted URLs. An unauthenticated, remote attacker can exploit this to invoke methods never intended to be invoked in this way, which could potentially lead to command execution.

- A denial of service (DoS) vulnerability exists in Jenkins due to a forced migration of user records. An unauthenticated, remote attacker can exploit this issue, via submitting a crafted username to Jenkins login, which could potentially prevent valid users from being able to log in.

- An arbitrary file read vulnerability exists in Jenkins due to the workspace browser following symlinks outside the workspace. An attacker could exploit this to read arbitrary files outside of the workspace and disclose sensitive information.

- A potential denial of service (DoS) vulnerability exists in Jenkins due to an error in cron expression form validation. An attacker can exploit this issue, via a crafted cron expression, to cause the application to stop responding.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade Jenkins to version 2.154 or later, Jenkins LTS to version 2.138.4, 2.150.1 or later.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities vulnerability:

Metasploit: exploit/multi/http/jenkins_metaprogramming
[Jenkins ACL Bypass and Metaprogramming RCE]
GitHub: https://github.com/0ps/pocassistdb
[CVE-2018-1000861]
GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
[CVE-2018-1000861]
GitHub: https://github.com/SexyBeast233/SecBooks
[CVE-2018-1000861]
GitHub: https://github.com/Zompire/cc_talk_2021
[CVE-2018-1000861]
GitHub: https://github.com/adamyordan/cve-2019-1003000-jenkins-rce-poc
[CVE-2018-1000861]
GitHub: https://github.com/deadbits/yara-rules
[CVE-2018-1000861]
GitHub: https://github.com/glithc/yara-detection
[CVE-2018-1000861]
GitHub: https://github.com/gobysec/Goby
[CVE-2018-1000861]
GitHub: https://github.com/gquere/pwn_jenkins
[CVE-2018-1000861]
GitHub: https://github.com/jiangsir404/POC-S
[CVE-2018-1000861]
GitHub: https://github.com/jweny/pocassistdb
[CVE-2018-1000861]
GitHub: https://github.com/koutto/jok3r-pocs
[CVE-2018-1000861]
GitHub: https://github.com/orangetw/awesome-jenkins-rce-2019
[CVE-2018-1000861]
GitHub: https://github.com/veo/vscan
[CVE-2018-1000861]
GitHub: https://github.com/whoadmin/pocs
[CVE-2018-1000861]
GitHub: https://github.com/woods-sega/woodswiki
[CVE-2018-1000861]
GitHub: https://github.com/xDro1d/CVE-2018-1000861
[CVE-2018-1000861: Jenkins远程代码执行]
GitHub: https://github.com/1NTheKut/CVE-2019-1003000_RCE-DETECTION
[CVE-2018-1000861: A C# module to detect if a Jenkins server is vulnerable to the RCE vulnerability ...]

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-2018-1000861
CVSS V2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	8.7 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.7 (High)

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

CVSS Base Score:	9.8 (Critical)
Impact Subscore:	5.9
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.4 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.4 (Critical)

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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(119500);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id(
    "CVE-2018-1000861",
    "CVE-2018-1000862",
    "CVE-2018-1000863",
    "CVE-2018-1000864"
  );
  script_xref(name:"TRA", value:"TRA-2018-43");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/08/10");

  script_name(english:"Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"A job scheduling and management system hosted on the remote web server
is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Jenkins running on the remote web server is prior to
2.154 or is a version of Jenkins LTS prior to 2.138.4 or 2.150.1. It is,
therefore, affected by multiple vulnerabilities:

  - A command execution vulnerability exists in the Stapler
    web framework used in Jenkins due to certain methods 
    being invoked via crafted URLs. An unauthenticated, 
    remote attacker can exploit this to invoke methods 
    never intended to be invoked in this way, which could
    potentially lead to command execution. 

  - A denial of service (DoS) vulnerability exists in 
    Jenkins due to a forced migration of user records. 
    An unauthenticated, remote attacker can exploit 
    this issue, via submitting a crafted username to
    Jenkins login, which could potentially prevent
    valid users from being able to log in.

  - An arbitrary file read vulnerability exists in 
    Jenkins due to the workspace browser following
    symlinks outside the workspace. An attacker
    could exploit this to read arbitrary files 
    outside of the workspace and disclose sensitive 
    information.

  - A potential denial of service (DoS) vulnerability 
    exists in Jenkins due to an error in cron expression
    form validation. An attacker can exploit this issue, 
    via a crafted cron expression, to cause the application 
    to stop responding.

Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"https://jenkins.io/security/advisory/2018-12-05/");
  script_set_attribute(attribute:"see_also", value:"https://www.tenable.com/security/research/tra-2018-43");
  script_set_attribute(attribute:"solution", value:
"Upgrade Jenkins to version 2.154 or later, Jenkins LTS to version
2.138.4, 2.150.1 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1000861");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Jenkins ACL Bypass and Metaprogramming RCE');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/07");

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

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2018-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("jenkins_detect.nasl", "jenkins_win_installed.nbin", "jenkins_nix_installed.nbin", "macosx_jenkins_installed.nbin");
  script_require_keys("installed_sw/Jenkins");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');

var app_info = vcf::combined_get_app_info(app:'Jenkins');

var constraints = [
  { 'fixed_version' : '2.154',    'fixed_display' : '2.138.4 LTS / 2.150.1 LTS / 2.154',  'edition' : 'Open Source' },
  { 'fixed_version' : '2.138.4',  'fixed_display' : '2.138.4 LTS / 2.150.1 LTS / 2.154',  'edition' : 'Open Source LTS' }
];

vcf::jenkins::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/jenkins_2_154.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\jenkins_2_154.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/jenkins_2_154.nasl

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How to Run

Here is how to run the Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities 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 CGI abuses plugin family.
On the right side table select Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities plugin ID 119500.
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_2_154.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a jenkins_2_154.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - jenkins_2_154.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_2_154.nasl -t <IP/HOST>

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References

TRA | Tenable Research Advisory:

TRA-2018-43

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_2_154.nasl version 1.10. For more plugins, visit the Nessus Plugin Library.

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Jenkins < 2.138.4 LTS / 2.150.1 LTS / 2.154 Multiple Vulnerabilities - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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