web_exploit_cve_2023_22518_confluence_auth_bypass.yml

title: CVE-2023-22518 Exploitation Attempt - Vulnerable Endpoint Connection (Webserver)
id: a902d249-9b9c-4dc4-8fd0-fbe528ef965c
related:
    - id: 27d2cdde-9778-490e-91ec-9bd0be6e8cc6
      type: similar
status: experimental
description: |
    Detects exploitation attempt of CVE-2023-22518 (Confluence Data Center / Confluence Server), where an attacker can exploit vulnerable endpoints to e.g. create admin accounts and execute arbitrary commands.
references:
    - https://confluence.atlassian.com/security/cve-2023-22518-improper-authorization-vulnerability-in-confluence-data-center-and-server-1311473907.html
    - https://www.huntress.com/blog/confluence-to-cerber-exploitation-of-cve-2023-22518-for-ransomware-deployment
    - https://github.com/ForceFledgling/CVE-2023-22518
author: Andreas Braathen (mnemonic.io)
date: 2023/11/14
tags:
    - detection.emerging_threats
    - attack.initial_access
    - attack.t1190
    - cve.2023.22518
logsource:
    category: webserver
detection:
    selection_method:
        cs-method: 'POST'
    selection_uris:
        cs-uri-query|contains:
          # Exploitable endpoints
            - '/json/setup-restore-local.action'
            - '/json/setup-restore-progress.action'
            - '/json/setup-restore.action'
            - '/server-info.action'
            - '/setup/setupadministrator.action'
    selection_status:
        # Response code may be indicative of exploitation success, but is not always the case
        sc-status:
            - 200
            - 302
            - 405
    condition: all of selection_*
falsepositives:
    - Vulnerability scanners
level: medium