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Bitbucket Global Permission Changed

Sigma Rules

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Summary
This rule is designed to detect changes in global permissions within Bitbucket, specifically focusing on auditing events that relate to granting or removing such permissions. The detection mechanism looks for specific actions in the audit logs categorized under Permissions, ensuring it captures requests made to remove or grant global permissions as well as the confirmation of these actions. The requirement for this rule to operate effectively is that the Audit log needs to be set to "Advance" log level, which enables detailed logging of permission-related events. Its utility is especially vital in environments where maintaining the integrity of user permissions is critical, as unauthorized changes can lead to privilege escalation and potential unauthorized access to resources. The rule also considers the context of user actions, acknowledging that there may be legitimate reasons for permission changes but aims to identify suspicious modifications within the logs if they occur outside expected patterns.
Categories
  • Cloud
  • Infrastructure
Data Sources
  • User Account
  • Application Log
Created: 2024-02-25