In today's cybersecurity landscape, patching is a critical process that helps ensure the security and integrity of software systems. With millions of lines of code in modern operating systems and applications, flaws and vulnerabilities are inevitable. In this walkthrough, we'll explore the importance of patching and demonstrate how to perform basic system patching using Windows PowerShell and the Linux apt utility. We'll also show you how to update a running Docker image.

Through this hands-on exercise, you'll gain a deeper understanding of the patching process and learn how to apply patches to keep your systems up to date and secure. Whether you're a system administrator, security professional, or simply interested in learning more about patching, this walkthrough is designed to provide you with practical experience and insights into the world of patch management.

Lab Questions and Answers: 1.1 Core Concepts

1. Patching is best defined as:
A. reactively fixing bugs when a user notices them.
B. building flawless software.
C. incrementally improving the efficiency of software.
D. the act of mending software.

Answer: D

2. Patching is part of which phase of the SDLC?
A. Development
B. Testing & QA
C. Maintenance
D. Discovery

Answer: C

3. The process of carefully testing new patches before pushing them to every server is known as:

Answer: change control

4. Which of the following is true about patching software?
(select all that apply)
A. Patches must be rolled out carefully for personal Windows 10 and 11 systems.
B. Windows system administrators should check daily for updates, and then download and install them during "off" hours.
C. Patching is far too important to wait for formal change management.
D. All of the above.
E. None of the above.

Answer: E

Lab Questions and Answers: 1.2 Guided Exercise

1. Which of the following updates are installed on the Windows lab server?
(select all that apply)
A. KB4052623
B. KB4589208
C. KB890830
D. KB2267602
E. KB5028936
F. KB5028168

Answer: A, B, D


2. How many Linux packages can be upgraded after running sudo apt list --upgradable?
A. Less than 100
B. Less than 200
C. Less than 300
D. More than 300

Answer: D


3. What version of the mysql docker image is running on the Linux lab server?

Answer: 5.7.31

Lab Questions and Answers: 1.3 Challenge Exercise

1. What is the flag for Challenge 1?

Answer: NOVIRUS4U

2. What is the flag for Challenge 2?

Answer: UP2DATE

Conclusion

In this walkthrough, we demonstrated the importance of patching and installed the Windows Malicious Software Removal Tool (MSRT) using PowerShell. By keeping systems up to date with the latest patches, you can protect against known vulnerabilities and reduce the risk of malware infections.
Patching is a critical process for system security, and tools like MSRT and PowerShell can help automate and streamline the process. By prioritizing patching, you can help keep your systems secure and protect against potential threats.