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Certified Ethical Hacker (CEH) Practice Question

During a black-box engagement you identify a publicly accessible GitLab endpoint at /api/v4/projects/42/trigger/pipeline. Examining the project's repository, you notice that a pipeline trigger token has been accidentally hard-coded in a .gitlab-ci.yml include file. Supplying this leaked value in the X-Gitlab-Token header lets you invoke the endpoint and define arbitrary CI jobs. Which high-impact attack becomes feasible against the organization's infrastructure if one of their shared runners is misconfigured in privileged mode?

  • Force an open redirect to harvest developer credentials during the GitLab login flow.

  • Exploit blind SQL injection in the token parameter to exfiltrate the GitLab database.

  • Perform directory traversal through the endpoint to read files such as /etc/passwd.

  • Launch an unauthorized pipeline that executes arbitrary shell commands, achieving remote code execution on the CI runner.

Certified Ethical Hacker (CEH)
Web Application Hacking
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