Bitbucket Unauthorized Access To A Resource

Description

Detects unauthorized access attempts to a resource.

Query · sigma

selection:
  auditType.category: Security
  auditType.action: Unauthorized access to a resource
condition: selection

Known false positives

  • Access attempts to non-existent repositories or due to outdated plugins. Usually "Anonymous" user is reported in the "author.name" field in most cases.
Raw source Bitbucket Unauthorized Access To A Resource · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Bitbucket Unauthorized Access To A Resource
id: 7215374a-de4f-4b33-8ba5-70804c9251d3
status: test
description: Detects unauthorized access attempts to a resource.
references:
    - https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html
author: Muhammad Faisal (@faisalusuf)
date: 2024-02-25
tags:
    - attack.resource-development
    - attack.t1586
logsource:
    product: bitbucket
    service: audit
    definition: 'Requirements: "Advance" log level is required to receive these audit events.'
detection:
    selection:
        auditType.category: 'Security'
        auditType.action: 'Unauthorized access to a resource'
    condition: selection
falsepositives:
    - Access attempts to non-existent repositories or due to outdated plugins. Usually "Anonymous" user is reported in the "author.name" field in most cases.
level: critical

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