CS0-003 Vulnerability Management Practice Question
This CS0-003 practice question tests your understanding of vulnerability management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: container images inherit vulnerabilities from their base layers.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A CI pipeline blocks a container image because the base layer contains a critical OpenSSL CVE. The application team says the vulnerable binary is not used. What is the BEST next step? For control selection, Which control best addresses the stated weakness without hiding risk?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Validate exploitability and rebuild from a patched base image where feasible
Option A is correct because it follows the principle of validating risk before acting. The pipeline blocks the image based on a static scan that flags a CVE, but the application team claims the vulnerable binary is not used. The best next step is to verify exploitability (e.g., by checking if the binary is actually invoked at runtime) and then rebuild from a patched base image if the vulnerability is real. This approach ensures the weakness is addressed without hiding risk, as the rebuild removes the vulnerable component entirely.
Key principle: Container images inherit vulnerabilities from their base layers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Validate exploitability and rebuild from a patched base image where feasible
Why this is correct
Container findings should consider reachability, but rebuilding from a patched base reduces inherited risk.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Container images inherit vulnerabilities from their base layers.
✗
Only rename the image tag
Why it's wrong here
Renaming does not change vulnerable contents.
✗
Ship the image and document nothing
Why it's wrong here
Risk acceptance requires evidence and approval.
✗
Ignore all base-image vulnerabilities
Why it's wrong here
Inherited dependencies can still create exploitable paths.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a static scan finding must always be acted upon immediately, without validating exploitability or considering that a vulnerable binary may be unused in the container's runtime context.
Detailed technical explanation
How to think about this question
Container image scanning tools like Trivy or Snyk check the package database (e.g., dpkg status or RPM database) for known CVEs, but they cannot determine runtime usage of a binary. A binary may be present in the base layer but never executed if the application entrypoint or dynamic linker does not invoke it. Rebuilding from a patched base image (e.g., using `apt-get upgrade` or switching to a distroless image) ensures the CVE is eliminated at the OS package level, which is the only reliable way to guarantee the vulnerability is not exploitable.
KKey Concepts to Remember
Container images inherit vulnerabilities from their base layers.
Validating exploitability assesses immediate risk but doesn't remove the vulnerability.
Rebuilding from a patched base image is the most effective long-term mitigation.
Risk acceptance requires formal documentation and approval, not just ignoring.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Container images inherit vulnerabilities from their base layers.
Real-world example
How this comes up in practice
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CS0-003 question in full detail.
Review container images inherit vulnerabilities from their base layers., then practise related CS0-003 questions on the same topic to reinforce the concept.
Vulnerability Management — This question tests Vulnerability Management — Container images inherit vulnerabilities from their base layers..
What is the correct answer to this question?
The correct answer is: Validate exploitability and rebuild from a patched base image where feasible — Option A is correct because it follows the principle of validating risk before acting. The pipeline blocks the image based on a static scan that flags a CVE, but the application team claims the vulnerable binary is not used. The best next step is to verify exploitability (e.g., by checking if the binary is actually invoked at runtime) and then rebuild from a patched base image if the vulnerability is real. This approach ensures the weakness is addressed without hiding risk, as the rebuild removes the vulnerable component entirely.
What should I do if I get this CS0-003 question wrong?
Review container images inherit vulnerabilities from their base layers., then practise related CS0-003 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Container images inherit vulnerabilities from their base layers.
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Question Discussion
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