Question # 1
An analyst reviews a recent government alert on new zero-day threats and finds the following CVE metrics for the most critical of the vulnerabilities:
CVSS: 3.1/AV:N/AC: L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:W/RC:R Which of the following represents the exploit code maturity of this critical vulnerability?
| A. E:U
| B. S:C
| C. RC:R
| D. AV:N
| E. AC:L
|
A. E:U
Explanation:
The exploit code maturity of a vulnerability is indicated by the E metric in the CVSS temporal score. The value of U means that no exploit code is available or unknown1. The other options are not related to the exploit code maturity, but to other aspects of the vulnerability, such as attack vector, scope, availability, and complexity1.
Question # 2
A security analyst reviews the following Arachni scan results for a web application that stores PII data: Which of the following should be remediated first?
| A. SQL injection
| B. RFI
| C. XSS
| D. Code injection
|
A. SQL injection
Explanation:
SQL injection should be remediated first, as it is a high-severity vulnerability that can allow an attacker to execute arbitrary SQL commands on the database server and access, modify, or delete sensitive data, including PII. According to the Arachni scan results, there are two instances of SQL injection and three instances of blind SQL injection (two timing attacks and one differential analysis) in the web application. These vulnerabilities indicate that the web application does not properly validate or sanitize the user input before passing it to the database server, and thus exposes the database to malicious queries12. SQL injection can have serious consequences for the confidentiality, integrity, and availability of the data and the system, and can also lead to further attacks, such as privilege escalation, data exfiltration, or remote code execution34.
Therefore, SQL injection should be the highest priority for remediation, and the web application should implement input validation, parameterized queries, and least privilege principle to prevent SQL injection attacks5.
References:
Web application testing with Arachni | Infosec, How do I create a generated scan report for PDF in Arachni Web …, Command line user interface
• Arachni/arachni Wiki
• GitHub, SQL Injection - OWASP, Blind SQL Injection - OWASP, SQL Injection Attack: What is it, and how to prevent it., SQL Injection Cheat Sheet & Tutorial | Veracode
Question # 3
| An analyst receives threat intelligence regarding potential attacks from an actor with seemingly unlimited time and resources. Which of the following best describes the threat actor attributed to the malicious activity? | | A. Insider threat
| | B. Ransomware group | | C. Nation-state | | D. Organized crime |
C. Nation-state
Question # 4
A security analyst must preserve a system hard drive that was involved in a litigation request Which of the following is the best method to ensure the data on the device is not modified?
| A. Generate a hash value and make a backup image.
| B. Encrypt the device to ensure confidentiality of the data.
| C. Protect the device with a complex password.
| D. Perform a memory scan dump to collect residual data.
|
A. Generate a hash value and make a backup image.
Explanation:
Generating a hash value and making a backup image is the best method to ensure the data on the device is not modified, as it creates a verifiable copy of the original data that can be used for forensic analysis. Encrypting the device, protecting it with a password, or performing a memory scan dump do not prevent the data from being altered or deleted. Verified References: CompTIA CySA+ CS0-002 Certification Study Guide,
Question # 5
An organization was compromised, and the usernames and passwords of all em-ployees were leaked online. Which of the following best describes the remedia-tion that could reduce the impact of this situation? | | A. Multifactor
authentication | | B. Password changes | | C. System hardening | | D. Password encryption |
A. Multifactor
authentication
Multifactor authentication (MFA) is a security method that requires users to provide two or more pieces of evidence to verify their identity, such as a password, a PIN, a fingerprint, or a one-time code. MFA can reduce the impact of a credential leak because even if the attackers have the usernames and passwords of the employees, they would still need another factor to access the organization’s systems and resources. Password changes, system hardening, and password encryption are also good security practices, but they do not address the immediate threat of compromised credentials. References: CompTIA CySA+ Certification Exam Objectives, [What Is Multifactor Authentication (MFA)?]
Question # 6
| Which Of the following techniques would be best to provide the necessary assurance for embedded software that drives centrifugal pumps at a power Plant? | | A. Containerization | | B. Manual code reviews | | C. Static and dynamic
analysis | | D. Formal methods | | E. D |
D. Formal methods
According to the CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition1, the best technique to provide the necessary assurance for embedded software that drives centrifugal pumps at a power plant is formal methods. Formal methods are a rigorous and mathematical approach to software development and verification, which can ensure the correctness and reliability of critical software systems. Formal methods can be used to specify, design, implement, and verify embedded software using formal languages, logics, and tools1. Containerization, manual code reviews, and static and dynamic analysis are also useful techniques for software assurance, but they are not as rigorous or comprehensive as formal methods. Containerization is a method of isolating and packaging software applications with their dependencies, which can improve security, portability, and scalability. Manual code reviews are a process of examining the source code of a software program by human reviewers, which can help identify errors, vulnerabilities, and compliance issues. Static and dynamic analysis are techniques of testing and evaluating software without executing it (static) or while executing it (dynamic), which can help detect bugs, defects, and performance issues1.
Question # 7
During a scan of a web server in the perimeter network, a vulnerability was identified that could be exploited over port 3389. The web server is protected by a WAF. Which of the following best represents the change to overall risk associated with this vulnerability? | | A. The risk would not
change because network firewalls are in use. | | B. The risk would
decrease because RDP is blocked by the firewall. | | C. The risk would
decrease because a web application firewall is in place. | | D. The risk would
increase because the host is external facing. |
B. The risk would
decrease because RDP is blocked by the firewall.
Port 3389 is commonly used by Remote Desktop Protocol (RDP), which is a service that allows remote access to a system. A vulnerability on this port could allow an attacker to compromise the web server or use it as a pivot point to access other systems. However, if the firewall blocks this port, the risk of exploitation is reduced. References: CompTIA CySA+ CS0-003 Certification Study Guide, Chapter 2: Software and Systems Security, page 67; CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition, Chapter 3: Software and Systems Security, page 103
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FAQs of CS0-003 Exam
What is the CompTIA CySA+ CS0-003 Exam?
The CompTIA Cybersecurity Analyst (CySA+) CS0-003 Exam is an updated version of the CompTIA cybersecurity certification exam. It assesses the latest cybersecurity analyst skills and focuses on software and systems security, threat and vulnerability management, compliance and assessment, security operations and monitoring, and incident response.
Who should take the CompTIA CySA+ CS0-003 Exam?
This exam is designed for IT professionals aiming to advance their career in cybersecurity. Ideal candidates include cybersecurity analysts, threat intelligence analysts, security operations center (SOC) personnel, and IT professionals seeking to demonstrate their cybersecurity skills and knowledge.
What topics are covered in the CompTIA CySA+ CS0-003 Exam?
The CS0-003 exam covers:
- Threat and Vulnerability Management
- Cyber Incident Response
- Security Architecture and Tool Sets
- Compliance and Assessment
These topics are designed to test a candidate’s ability to proactively defend and continuously improve the security of an organization.
What is the time duration for the CompTIA CySA+ CS0-003 Exam?
The time allotted for the CS0-003 exam is 165 minutes.
What score is required to pass the CompTIA CySA+ CS0-003 Exam?
To pass the CS0-003 exam, candidates must achieve a score of 750 (on a scale of 100-900). This score reflects the level of understanding and proficiency required for the certification.
What are the prerequisites for the CompTIA CySA+ CS0-003 Exam?
While there are no mandatory prerequisites, it is recommended that candidates have foundational knowledge in IT security and experience in the field. Familiarity with basic security concepts and best practices is beneficial.
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For effective preparation of the CompTIA CySA+ CS0-003 Exam, Realbraindumps.com provides updated exam dumps, featuring the latest questions and answers. These resources, curated by experts, are designed to cover all key exam topics comprehensively, making them an essential tool for exam success.
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