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Certified Information Systems Security Professional CISSP Practice Test 57

Question 560

The organization implemented the response to this scenario: Pull requests from untrusted contributors run on self-hosted privileged runners with live production credentials. The approved response was: Isolate untrusted builds and withhold sensitive credentials and deployment authority until trusted approval. Which statement MOST accurately identifies a remaining risk or constraint?

  1. Branch protection guarantees no unreviewed pull-request job can access tokens on privileged runners.
  2. Repository branch protection is insufficient if workflow triggers expose secrets to unreviewed jobs.
  3. A signed build output proves the executing CI worker was trustworthy even if it ran attacker-controlled code.
  4. An ephemeral runner is safe by definition when it still has production administrator credentials during the untrusted test.

Explanation

Correct Answer

B:

Untrusted code can execute inside CI and steal secrets or alter host state. A malicious test PR cannot access protected tokens or modify production resources.

Incorrect Answers

A:

Workflow event semantics and runner permissions can expose secrets despite branch rules.

C:

Artifact signatures need trusted build identity and source/process provenance.

D:

Short lifetime does not remove immediate exfiltration opportunities.

Question 561

Management implemented a response after this event: Pull requests from untrusted contributors run on self-hosted privileged runners with live production credentials. The response was: Isolate untrusted builds and withhold sensitive credentials and deployment authority until trusted approval. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. A malicious sample pull request can read production credentials from runner environment variables.
  2. The build logs show a successful test but contain reusable production tokens emitted by a fork.
  3. A protected branch policy is enabled while a pull-request event can still modify real production resources.
  4. A malicious test PR cannot access protected tokens or modify production resources.

Explanation

Correct Answer

D:

A malicious test PR cannot access protected tokens or modify production resources. Untrusted code can execute inside CI and steal secrets or alter host state.

Incorrect Answers

A:

The untrusted build isolation boundary is missing.

B:

Functional success is not evidence of protected CI secret handling.

C:

Repository approvals do not demonstrate restricted workflow execution.

Question 562

A project claims secure coding success because it has zero open bugs without tracking escaped vulnerabilities. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Declare software secure because the open bug queue is empty and stop measuring escaped production flaws.
  2. Reward teams only for closing the largest number of low-risk findings per week.
  3. Measure escape rates, severity, detection time and recurring root causes alongside ticket backlog.
  4. Omit severity, time-to-detect and recurrence from the security program dashboard.

Explanation

Correct Answer

C:

Empty bug queues can indicate missing detection rather than genuinely secure software. Security metrics can be gamed if teams optimize counts instead of user-impacting outcomes.

Incorrect Answers

A:

No tickets may indicate under-detection rather than low defect incidence.

B:

Ticket volume incentives can hide high-impact recurring vulnerabilities.

D:

Without outcome measures leadership cannot assess real delivered risk reduction.

Question 563

The organization implemented the response to this scenario: A project claims secure coding success because it has zero open bugs without tracking escaped vulnerabilities. The approved response was: Measure escape rates, severity, detection time and recurring root causes alongside ticket backlog. Which statement MOST accurately identifies a remaining risk or constraint?

  1. Zero open bugs guarantees the absence of exploitable vulnerabilities even when detection coverage is poor.
  2. A single escaped-defect metric is impossible to manipulate and always sufficient by itself.
  3. Security metrics can be gamed if teams optimize counts instead of user-impacting outcomes.
  4. Closing issues quickly automatically prevents the same weakness class from reappearing in future releases.

Explanation

Correct Answer

C:

Empty bug queues can indicate missing detection rather than genuinely secure software. Trend reports show reduced exploitable defects and improved detection coverage across releases.

Incorrect Answers

A:

A queue counts known findings, not every weakness or missed attack path.

B:

Metrics need multiple perspectives and review of incentives and detection practices.

D:

Root-cause correction and preventive practices are separate requirements.

Question 564

Management implemented a response after this event: A project claims secure coding success because it has zero open bugs without tracking escaped vulnerabilities. The response was: Measure escape rates, severity, detection time and recurring root causes alongside ticket backlog. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. Trend reports show reduced exploitable defects and improved detection coverage across releases.
  2. The ticket backlog is empty but repeated production exploits are discovered only after release.
  3. Closure counts climb while critical authentication defects recur at the same rate.
  4. A dashboard displays only development velocity with no security outcome trends or escaped vulnerability data.

Explanation

Correct Answer

A:

Trend reports show reduced exploitable defects and improved detection coverage across releases. Empty bug queues can indicate missing detection rather than genuinely secure software.

Incorrect Answers

B:

Absence of reported issues is not proof of security effectiveness.

C:

Work volume does not demonstrate preventive quality gains.

D:

Delivery throughput cannot measure actual exploit-risk reduction.

Question 565

An engineer can force-push release branches and erase review history after production deployment. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Allow uncontrolled force-pushes to protected release branches after deployment.
  2. Use protected version control, signed or attributable changes and preserved review/build evidence.
  3. Rely only on unsigned file names and release tags to identify which source was approved.
  4. Delete build logs and review records once tests pass to save storage.

Explanation

Correct Answer

B:

Tamper-resistant provenance links deployed code to approved change decisions. Signing commits alone cannot guarantee the signer's authority or a safe code review.

Incorrect Answers

A:

History rewriting undermines traceability from production code to approved reviews.

C:

Mutable labels cannot prove exact code provenance.

D:

Erasing evidence prevents reconstruction of authorization and released artifacts.

Question 566

The organization implemented the response to this scenario: An engineer can force-push release branches and erase review history after production deployment. The approved response was: Use protected version control, signed or attributable changes and preserved review/build evidence. Which statement MOST accurately identifies a remaining risk or constraint?

  1. Signing commits alone cannot guarantee the signer's authority or a safe code review.
  2. A valid commit signature automatically proves that the signer was allowed to approve the change.
  3. A human-readable release tag guarantees identical build bytes across every pipeline run.
  4. Preserving commit history removes all need for protected deployment logs and reviewer decisions.

Explanation

Correct Answer

A:

Tamper-resistant provenance links deployed code to approved change decisions. A released build traces to an immutable approved change, tests and accountable reviewer.

Incorrect Answers

B:

Cryptographic identity is separate from workflow authorization and review quality.

C:

Mutable tags and dependency resolution can lead to different artifacts.

D:

Source provenance alone does not show which artifact was promoted under which approval.

Question 567

Management implemented a response after this event: An engineer can force-push release branches and erase review history after production deployment. The response was: Use protected version control, signed or attributable changes and preserved review/build evidence. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. The deployed build cannot be matched to an immutable approved commit and responsible reviewer.
  2. A release tag exists but points to a different digest after an unreviewed force-push.
  3. CI tests succeeded but logs were erased and no records identify author or approver for production changes.
  4. A released build traces to an immutable approved change, tests and accountable reviewer.

Explanation

Correct Answer

D:

A released build traces to an immutable approved change, tests and accountable reviewer. Tamper-resistant provenance links deployed code to approved change decisions.

Incorrect Answers

A:

Missing provenance prevents accountable change assurance.

B:

A mutable label is not stable release evidence.

C:

Test completion does not demonstrate attributable release governance.

Question 568

A team patches an SQL injection flaw but its new regression test only checks one harmless input. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Test the fixed SQL query only with a harmless account ID and assume all injection classes are closed.
  2. Patch only the visible web form while leaving the same concatenation flaw in a back-end API.
  3. Ignore future variants because the scanner no longer detects the exact original exploit string.
  4. Write negative and adversarial requirements-based regression tests for equivalent injection paths.

Explanation

Correct Answer

D:

A fix can reproduce the same assumption and leave alternative malformed inputs exploitable. One test cannot prove all future inputs are safe, so enforce safer implementation patterns.

Incorrect Answers

A:

One happy-path input cannot explore alternative syntax, encodings or authorization bypass.

B:

A partial surface fix does not address the underlying vulnerable code path.

C:

Pattern-specific test success is not structural prevention of query injection.

Question 569

The organization implemented the response to this scenario: A team patches an SQL injection flaw but its new regression test only checks one harmless input. The approved response was: Write negative and adversarial requirements-based regression tests for equivalent injection paths. Which statement MOST accurately identifies a remaining risk or constraint?

  1. One test cannot prove all future inputs are safe, so enforce safer implementation patterns.
  2. A single negative SQL injection test proves no encoded or alternate injection path can ever exist.
  3. Escaping one quote character is equivalent to binding all untrusted values as parameters.
  4. Passing input tests eliminates the need to enforce object-level authorization around the query.

Explanation

Correct Answer

A:

A fix can reproduce the same assumption and leave alternative malformed inputs exploitable. Malicious input variations remain data and cannot change query structure or permissions.

Incorrect Answers

B:

Regression coverage should include meaningful variants and safer implementation patterns.

C:

Ad hoc filtering can fail under syntax and encoding variations.

D:

Preventing SQL syntax injection and enforcing data entitlement are distinct controls.

Question 570

Management implemented a response after this event: A team patches an SQL injection flaw but its new regression test only checks one harmless input. The response was: Write negative and adversarial requirements-based regression tests for equivalent injection paths. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. Malicious input variations remain data and cannot change query structure or permissions.
  2. The original demo payload fails, but an alternate boolean expression still changes the database query structure.
  3. The web form rejects special characters while the internal API still concatenates untrusted account IDs.
  4. The SQL syntax test passes but a user can query other customers’ records through legitimate IDs.

Explanation

Correct Answer

A:

Malicious input variations remain data and cannot change query structure or permissions. A fix can reproduce the same assumption and leave alternative malformed inputs exploitable.

Incorrect Answers

B:

A narrow regression did not cover equivalent injection paths.

C:

UI validation is not safe query construction at the data boundary.

D:

Injection prevention alone does not establish object authorization.

Certified Information Systems Security Professional (CISSP) Practice Tests

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