Free

CVE Series: Jenkins Arbitrary File Leak Vulnerability (CVE-2024-23897)

CVE-2024-23897 is a critical security flaw affecting Jenkins, a Java-based open-source automation server widely used for application building, testing, and deployment. It allows unauthorized access to files through the Jenkins integrated command line interface (CLI), potentially leading to remote code execution (RCE).

1
5
M
Time
Intermediate
difficulty
1
ceu/cpe

Course Content

No items found.
Course Description

CVE-2024-23897 is a critical security flaw affecting Jenkins, a Java-based open-source automation server widely used for application building, testing, and deployment. It allows unauthorized access to files through the Jenkins integrated command line interface (CLI), potentially leading to remote code execution (RCE). The vulnerability, with a CVSS score of 9.8, affects Jenkins versions up to 2.441 and LTS versions up to 2.426.2. It stems from the use of the args4j library, which can replace a file path preceded by an "@" character with the file's contents. This can be exploited to read any file on the Jenkins controller file system. In this course you’ll be exploiting and mitigating this critical CVE.

Target Audience

This course is for seasoned red teamers, penetration testers, security and vulnerability assessment analysts, developers, and system administrators who want to know how to exploit and protect against the latest vulnerabilities impacting enterprise systems.

Course Level

Intermediate

Prerequisites

Basic knowledge of the Linux command line, networking, and Python."

Helpful Links

  • CVE Entry: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-23897 (Official CVE)
  • NIST Entry: https://nvd.nist.gov/vuln/detail/CVE-2024-23897
  • Security Advisory: https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3314
  • Sonar Blog: https://www.sonarsource.com/blog/excessive-expansion-uncovering-critical-security-vulnerabilities-in-jenkins/
  • Zscaler Blog: https://www.zscaler.com/blogs/security-research/jenkins-arbitrary-file-leak-vulnerability-cve-2024-23897-can-lead-rce
  • Horizon3.ai Blog: https://www.horizon3.ai/attack-research/red-team/cve-2024-23897-assessing-the-impact-of-the-jenkins-arbitrary-file-leak-vulnerability/
  • Exploits: https://packetstormsecurity.com/files/176840/Jenkins-2.441-LTS-2.426.3-Arbitrary-File-Read.html https://github.com/godylockz/CVE-2024-23897
  • YouTube Video with 0xdf on exploitation: https://www.youtube.com/watch?v=toPJhfy-wvw
  • This course is part of a Career Path:
    No items found.

    Instructed by

    Senior Instructor
    Clint Kehr

    Clint is a technical manager for a financial services company’s Responsible Disclosure Team, where he interacts with ethical hackers who find vulnerabilities in the company’s infrastructure. Clint is a former Special Agent with the Department of Justice where he specialized in internet investigations and conducted numerous cases on cyber threat actors on the surface, deep, and dark web, resulting in Clint earning the Attorney General’s Distinguished Service Award. Clint has trained over 1,000 law enforcement officers, prosecutors, and civilians on the dark web and dark market websites. Clint has a master’s degree in intelligence studies from American Military University where he graduated with honors and also has a master’s degree in Information Technology from Carnegie Mellon University where he graduated with highest distinction. As a former Navy Reserve Officer, Clint served in many roles, such as a division officer and department head for commands in the information warfare community.

    Provider
    Cybrary Logo
    Certification Body
    Certificate of Completion

    Complete this entire course to earn a CVE Series: Jenkins Arbitrary File Leak Vulnerability (CVE-2024-23897) Certificate of Completion

    Coming mid-July
    Cybrary Reimagined.
    Level up with structured, role-aligned career paths.
    ALL NEW!
    Cybrary Reimagined.
    Celebrate Cybersecurity Awareness Month with our buy 2, get 1 offer!
    Level up with structured, role-aligned career paths.
    Valid until October 31. Elevate your skills today!
    Start Now

    Heading

    Heading 1

    Heading 2

    Heading 3

    Heading 4

    Heading 5
    Heading 6

    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.

    Block quote

    Ordered list

    1. Item 1
    2. Item 2
    3. Item 3

    Unordered list

    • Item A
    • Item B
    • Item C

    Text link

    Bold text

    Emphasis

    Superscript

    Subscript

    This is some text inside of a div block.
    Share

    Purpose Statement

    Cybrary Career Paths are comprehensive training programs designed to prepare you for the most in-demand roles in the cybersecurity workforce. Each path follows a Learn, Practice, Prove model and includes different activity types aligned to key topics within the path’s security domain. As you progress through the path, your progress will be measured in real time using Experience Points (XP) that serve as a comprehensive capability score for each topic. Upon completing all of the requirements for a path, you will be rewarded with a shareable digital badge via Credly.
    This is some text inside of a div block.
    This is some text inside of a div block.
    M
    Time
    This is some text inside of a div block.
    difficulty
    This is some text inside of a div block.
    ceu/cpe

    Overview

    Heading 1

    Heading 2

    Heading 3

    Heading 4

    Heading 5
    Heading 6

    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.

    Block quote

    Ordered list

    1. Item 1
    2. Item 2
    3. Item 3

    Unordered list

    • Item A
    • Item B
    • Item C

    Text link

    Bold text

    Emphasis

    Superscript

    Subscript

    Frequently Asked Questions
    No items found.
    What Will I Learn?
    Foundations
    Focused on the core IT competencies that cybersecurity professionals need to succeed in any career path.
    Defensive Security
    Focused on trying to find the bad guys. Topics such as threat intelligence, threat hunting, network monitoring, incident response. Defensive security is a reactive measure taken once a vulnerability is found through prevention, detection, and response.
    Engineering and Operations
    Focused on building and operating information systems.
    Governance, Risk, and Compliance
    Focused on the core IT competencies that cybersecurity professionals need to succeed in any career path.
    Leadership and Management
    Focused on program design and oversight. Covers project and program management.
    Offensive Security
    Focused on validating security controls by trying to break them (i.e. penetration testing or ethical hacking). Topics such as Kali Linux, metasploit, scanning, and privilege escalation. Offensive security seeks out the problem or vulnerability through ethical hacking and finds a solution to disable the operation.
    Offensive Security
    Focused on the core IT competencies that cybersecurity professionals need to succeed in any career path.
    Path Outline

    Heading 1

    Heading 2

    Heading 3

    Heading 4

    Heading 5
    Heading 6

    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.

    Block quote

    Ordered list

    1. Item 1
    2. Item 2
    3. Item 3

    Unordered list

    • Item A
    • Item B
    • Item C

    Text link

    Bold text

    Emphasis

    Superscript

    Subscript

    Course Outline

    No items found.
    No items found.
    No items found.

    What Our Learners Are Saying

    Join 3 million+ users, including 96% of Fortune 1000 companies who use our platform to upskill their teams. See what the buzz is about - start learning for free!

    No items found.