Permission Check Bypass in Jenkins Pipeline Build Step Plugin

Executive Summary

This vulnerability is a missing permission check in Jenkins Pipeline: Build Step Plugin. It allows downstream builds triggered by the build step to be canceled even when the user's authentication lacks the required Item/Cancel permission on the downstream job.

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Detection Guidance

This vulnerability can be detected by reviewing Jenkins job configurations for the use of the build step in Pipeline scripts. Check for downstream builds triggered by the build step where the triggering job lacks Item/Cancel permission on the downstream job. No specific commands are provided in the context.

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Impact Analysis

This vulnerability could allow unauthorized users to cancel builds they are not permitted to, potentially disrupting CI/CD pipelines and causing unexpected downtime in Jenkins environments.

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Compliance Impact

This vulnerability does not directly impact compliance with GDPR, HIPAA, or similar standards as it involves unauthorized job cancellation rather than data exposure or privacy violations. However, if misused, it could disrupt audit logs or workflow integrity, indirectly affecting compliance in environments where such logs are critical for regulatory reporting.

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Mitigation Strategies

Update Jenkins Pipeline: Build Step Plugin to version 599.v4b_67ea_11b_152 or later to address the missing permission check issue.

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