Exam CS0-003 topic 1 question 134 discussion

🔥 Why Vulnerability A is the highest concern: Network attack vector = can be exploited remotely (e.g., via email links). Low complexity = easy to execute. No authentication required = attacker doesn't need credentials. User interaction required = lines up with the scenario (users click on malicious links).

A seems to be the most correct. Vulnerability A does not require user interaction, does not require authentication and the attack complexity is low. The attack vector for Vuln A is Network, which is generally easier for attackers when compared to the local one. Network base attack can spread across to multiple systems.

Vulnerability B is the vulnerability that the analyst should be most concerned about, knowing that end users frequently click on malicious links sent via email. Vulnerability B is a remote code execution vulnerability in Microsoft Outlook that allows an attacker to run arbitrary code on the target system by sending a specially crafted email message. This vulnerability is very dangerous, as it does not require any user interaction or attachment opening to trigger the exploit. The attacker only needs to send an email to the victim's Outlook account, and the code will execute automatically when Outlook connects to the Exchange server. This vulnerability has a high severity rating of 9.8 out of 10, and it affects all supported versions of Outlook.

'Click' is the keyword in this question. "User interaction: Yes."

I would go for D, everyone is overlooking the last part of the question, if a user clicks on a malicious link and their system gets hijacked, they are already part of the local network and thus the AC:Low, No Auth Required and No User interaction needed vulnerability is very easily exploited.

Answer is in the question. "...knowing that end users frequently click on malicious links sent via email." Of the two correct answers, A is more correct. The other requires authentication which makes it harder to exploit than A.

A) Vulnerability A Spreads through the network, low complexity ( a simple email. Just one click), doesn't require any user authentication, but requires them to interact with it (clicking the malicious link)

Taking a closer look... Vulnerability A is the only one that can be exploited remotely without requiring authentication and with minimal user interaction (just clicking a link), making it more concerning in the context of users clicking on malicious links sent via and -mail. The answer is correct, it is in the letter A.

The given answer is correct. You can rule out B and D right away as they are local attack vectors and networks poses higher risk. You can rule out C since High attack complexity and Authentication Requirement is a lower risk than no Authentication and Low Complexity. Low complexity attacks are easier to pull off and no authentication is required. Answer is A.

In this scenario, Vulnerability C is the one that should most concern the analyst, as it has a network attack vector, high attack complexity, and requires authentication and user interaction. This means that an attacker could exploit this vulnerability remotely, without the need for direct user interaction, making it a more critical threat in this context.