Exam CS0-003 topic 1 question 117 discussion

The answer is D. A. Total Impact Score = C + I + A = 0.56 + 0.56 + 0.22 = 1.34 B. Total Impact Score = C + I + A = 0.56 + 0.56 + 0.22 = 1.34 C. Total Impact Score = C + I + A = 0.56 + 0.56 + 0.56 = 1.68 D. Total Impact Score = C + I + A = 0.22 + 0.22 + 0.22 = 0.66 Therefore, vulnerability D represents the least impactful risk, given the CVSS3.1 base scores, as it has the lowest total impact score.

you only need to focus on the las three /C:L/I:L/A:L because is asking for the least impactful so basically is D.

If you ask GPT this, you'll get the wrong answer, since it just looks at the base score. The fact of the matter is D. has CIA - low/low/low, making it the least impactful overall.

the least impactful vulnerability as it has the lowest CVSS score, indicating that it’s harder to exploit and requires more conditions to be met compared to the others.

A: Although D has lower CIA impacts, its lower attack barriers (no privileges required, no user interaction, and scope change) make it more concerning. A represents a lower risk de to its higher barriers for exploitation, even though its base score is lower.

Can confirm that impact is composed of the confidentiality, integrity, and availability metrics per CompTIA CySA+ Study Guide: Exam CS0-003, Third Edition.

"Which of the following represents the least impactful risk, GIVEN THE CVSS3.1 BASE SCORES?" Easy question, tricky is in the wording. Based in the score = 6.0. ;)

Considering the impact on confidentiality, integrity, and availability, Option A (Base Score 6.0) represents the least impactful risk if left unremediated. It has a moderate overall risk level. The other options have either higher availability impact or broader scope, making them riskier choices for prioritization. The difference between A & D lies in the privileges required and user interaction aspects. Option A requires higher privileges and user interaction, which could limit its exploitation. However, both options have similar overall risk levels.

The answer is D since they are asking about the least impactful (impact = CIA triad)

Comparing the impact metrics, option D has the lowest impact overall, as it has low scores for confidentiality, integrity, and availability. Therefore, option D represents the least impactful risk.

Please note the key word "least impactful risk". The score doesn't represent the impact. The impact is only related to CIA metrics.

Agreed with section8santa, while D has greater CIA values, A is harder to exploit due to it's attack complexity, privileges and user interaction required. Making the it the one with the lowest base score, and the one we would worry about remediating after we remediate the first 3 vulnerabilities. We assume that the higher the base score, the more urgent it is to remediate, we look at other contributing factors when the base scores are the same to further make a decision but in this example, none of the base scores are the same.

See the CVSS 3.1 user guide. https://www.first.org/cvss/v3.1/user-guide 3.2. Confidentiality and Integrity, Versus Availability Impacts The Confidentiality and Integrity metrics refer to impacts that affect the data used by the service. For example, web content that has been maliciously altered, or system files that have been stolen. The Availability impact metric refers to the operation of the service. That is, the Availability metric speaks to the performance and operation of the service itself – not the availability of the data. Consider a vulnerability in an Internet service such as web, email, or DNS that allows an attacker to modify or delete all web files in a directory. The only impact is to Integrity, not Availability, as the web service is still functioning – it just happens to be serving back altered content.

This vulnerability, while having high impacts on confidentiality and integrity, has a lower impact on availability (A:L), requires high attack complexity, high privileges, and user interaction. This makes it less likely to be exploited compared to the others, thus representing the least impactful risk among the given options.

D. because the score for CIA is L

A requires user interaction UI:R and yet the availability is low A:L making A a better choice than D or C.

Went with D due to CIA are all L.