CVE Series: Log4J (CVE-2021-44228)

The Log4J vulnerability (CVE-2021-44228) took the world by storm in late 2021. Do you have what it takes to exploit and mitigate this critical vulnerability that experts say had the biggest global impact since Shellshock? Find out in this course, where you'll put your defensive and pen testing skills to the ultimate test in a virtual lab.
1
45
M
Time
intermediate
difficulty
2
ceu/cpe

Course Content

Course Description

Who should take this course?

Our Log4J vulnerability (CVE-2021-44228) course is designed for intermediate-level learners in either the defensive or offensive security spaces. Offensive security professionals, SOC analysts, and system administrators can take this course to learn how to protect against this critical vulnerability impacting enterprise systems or to exploit the vulnerability in their own testing activities.

What are the prerequisites for this course?

You should have a functional understanding of Apache Log4J and how it is used in many systems, as well as basic knowledge of Java as a programming language and functional knowledge of web applications.

Why should I take this course?

The Log4J vulnerability (CVE-2021-44228) has been labeled by security experts as one of the most serious and far-reaching vulnerabilities of all time, with the highest possible CVSS criticality score of 10. This is because the open-source, Java-based Apache Log4J software is widely used among large and small organizations for routine log management in many applications and systems. With the Log4J vulnerability (CVE-2021-44228), threat actors can exploit the software to initiate a Remote Code Execution (RCE), data leakage, or Denial-of-Service (DoS) attack. Adversaries can also take advantage of the vulnerability to more effectively and efficiently launch other cyberattacks. Our course shows you how to exploit and mitigate this vulnerability in a secure virtual lab environment, giving you the skills you need to protect your organization.

What makes this course different from other courses on similar topics?

This course specifically covers a critical vulnerability that could affect your organization. In an interesting twist, the course uses the exploit as part of the mitigation. There are two instructors for this course. Clint Kehr 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. Matt Mullins is a seasoned professional in offensive security with over a decade of experience where he has worked in medical, financial, and government spaces. Matt has led multiple Red Team engagements, ranging from a few weeks to a year and covering multiple security domains. Outside of Red Teaming, Matt is also a seasoned penetration tester with interests in: AppSec, OSINT, Hardware, Wifi, Social Engineering, and Physical Security.

Why should I take this course on Cybrary and not somewhere else?

Our Log4J vulnerability (CVE-2021-44228) course enables you to learn from the foremost experts in the field and ensures your readiness to recognize and mitigate this CVE. Defenders will know how to protect their organization against this vulnerability. Offensive teams will be able to exploit this vulnerability. Our on-demand format affords you the flexibility to learn at your own pace.

This course is part of a Career Path:
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Instructed by

Senior Instructor
Matthew Mullins

Matt has led multiple Red Team engagements, ranging from a few weeks to a year and covering multiple security domains. Outside of Red Teaming, Matt is also a seasoned penetration tester with interests in: AppSec, OSINT, Hardware, Wifi, Social Engineering, and Physical Security. Matt has a Master's degree in Information Assurance and an exhaustive number of certifications ranging from frameworks, management, and hands-on hacking. Matt is a Technical SME at Cybrary, focusing on Adversarial Emulation and Red Teaming for course content.

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
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Certification Body
Certificate of Completion

Complete this entire course to earn a CVE Series: Log4J (CVE-2021-44228) Certificate of Completion

Course
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CVE Series: Log4J (CVE-2021-44228)

Course

The Log4J vulnerability (CVE-2021-44228) took the world by storm in late 2021. Do you have what it takes to exploit and mitigate this critical vulnerability that experts say had the biggest global impact since Shellshock? Find out in this course, where you'll put your defensive and pen testing skills to the ultimate test in a virtual lab.
Path Releasing Q2 2025
Full access included with 
Insider Pro
 and 
Teams

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Learners at 96% of Fortune 1000 companies trust Cybrary

About this course

The Log4J vulnerability (CVE-2021-44228) took the world by storm in late 2021. Do you have what it takes to exploit and mitigate this critical vulnerability that experts say had the biggest global impact since Shellshock? Find out in this course, where you'll put your defensive and pen testing skills to the ultimate test in a virtual lab.
Read More

Course Description

Who should take this course?

Our Log4J vulnerability (CVE-2021-44228) course is designed for intermediate-level learners in either the defensive or offensive security spaces. Offensive security professionals, SOC analysts, and system administrators can take this course to learn how to protect against this critical vulnerability impacting enterprise systems or to exploit the vulnerability in their own testing activities.

What are the prerequisites for this course?

You should have a functional understanding of Apache Log4J and how it is used in many systems, as well as basic knowledge of Java as a programming language and functional knowledge of web applications.

Why should I take this course?

The Log4J vulnerability (CVE-2021-44228) has been labeled by security experts as one of the most serious and far-reaching vulnerabilities of all time, with the highest possible CVSS criticality score of 10. This is because the open-source, Java-based Apache Log4J software is widely used among large and small organizations for routine log management in many applications and systems. With the Log4J vulnerability (CVE-2021-44228), threat actors can exploit the software to initiate a Remote Code Execution (RCE), data leakage, or Denial-of-Service (DoS) attack. Adversaries can also take advantage of the vulnerability to more effectively and efficiently launch other cyberattacks. Our course shows you how to exploit and mitigate this vulnerability in a secure virtual lab environment, giving you the skills you need to protect your organization.

What makes this course different from other courses on similar topics?

This course specifically covers a critical vulnerability that could affect your organization. In an interesting twist, the course uses the exploit as part of the mitigation. There are two instructors for this course. Clint Kehr 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. Matt Mullins is a seasoned professional in offensive security with over a decade of experience where he has worked in medical, financial, and government spaces. Matt has led multiple Red Team engagements, ranging from a few weeks to a year and covering multiple security domains. Outside of Red Teaming, Matt is also a seasoned penetration tester with interests in: AppSec, OSINT, Hardware, Wifi, Social Engineering, and Physical Security.

Why should I take this course on Cybrary and not somewhere else?

Our Log4J vulnerability (CVE-2021-44228) course enables you to learn from the foremost experts in the field and ensures your readiness to recognize and mitigate this CVE. Defenders will know how to protect their organization against this vulnerability. Offensive teams will be able to exploit this vulnerability. Our on-demand format affords you the flexibility to learn at your own pace.

Train Your Team

Cybrary’s expert-led cybersecurity courses help your team remediate skill gaps and get up-to-date on certifications. Utilize Cybrary to stay ahead of emerging threats and provide team members with clarity on how to learn, grow, and advance their careers within your organization.

Included in a Path

Matthew Mullins
Security Researcher - Adversary Emulation
Read Full Bio
Clint Kehr
Ethical Hacker
Read Full Bio
Learn

Learn core concepts and get hands-on with key skills.

Practice

Exercise your problem-solving and creative thinking skills with security-centric puzzles

Prove

Assess your knowledge and skills to identify areas for improvement and measure your growth

Get Hands-on Learning

Put your skills to the test in virtual labs, challenges, and simulated environments.

Measure Your Progress

Track your skills development from lesson to lesson using the Cybrary Skills Tracker.

Connect with the Community

Connect with peers and mentors through our supportive community of cybersecurity professionals.

Success from Our Learners

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Don Gates

Principal Systems Engineer/SAIC

"Cybrary’s SOC Analyst career path was the difference maker, and was instrumental in me landing my new job. I was able to show the employer that I had the right knowledge and the hands-on skills to execute the role."

Cory

Cybersecurity analyst/

"I was able to earn my CISSP certification within 60 days of signing up for Cybrary Insider Pro and got hired as a Security Analyst conducting security assessments and penetration testing within 120 days. This certainly wouldn’t have been possible without the support of the Cybrary mentor community."

Mike

Security Engineer and Pentester/

"Cybrary really helped me get up to speed and acquire a baseline level of technical knowledge. It offers a far more comprehensive approach than just learning from a book. It actually shows you how to apply cybersecurity processes in a hands-on way"

Don Gates

Principal Systems Engineer/SAIC

"Cybrary’s SOC Analyst career path was the difference maker, and was instrumental in me landing my new job. I was able to show the employer that I had the right knowledge and the hands-on skills to execute the role."

Cory

Cybersecurity analyst/

"I was able to earn my CISSP certification within 60 days of signing up for Cybrary Insider Pro and got hired as a Security Analyst conducting security assessments and penetration testing within 120 days. This certainly wouldn’t have been possible without the support of the Cybrary mentor community."

Mike

Security Engineer and Pentester/

"Becoming a Cybrary Insider Pro was a total game changer. Cybrary was instrumental in helping me break into cybersecurity, despite having no prior IT experience or security-related degree. Their career paths gave me clear direction, the instructors had real-world experience, and the virtual labs let me gain hands-on skills I could confidently put on my resume and speak to in interviews."

Cassandra

Information Security Analyst/Cisco Systems

"I was able to earn both my Security+ and CySA+ in two months. I give all the credit to Cybrary. I’m also proud to announce I recently accepted a job as a Cyber Systems Engineer at BDO... I always try to debunk the idea that you can't get a job without experience or a degree."

Casey

Cyber Systems Engineer/BDO

"Cybrary has helped me improve my hands-on skills and pass my toughest certification exams, enabling me to achieve 13 advanced certifications and successfully launch my own business. I love the practice tests for certification exams, especially, and appreciate the wide-ranging training options that let me find the best fit for my goals"

Angel

Founder,/ IntellChromatics.