Imgproxy Unauthorized Access

ID: imgproxy-unauth

Severity: low

Author: userdehghani

Tags: imgproxy,unauth,misconfig

Description

imgproxy is a fast and secure standalone server for resizing, processing, and converting images.

YAML Source

id: imgproxy-unauth

info:
  name: Imgproxy Unauthorized Access
  author: userdehghani
  severity: low
  description: |
    imgproxy is a fast and secure standalone server for resizing, processing, and converting images.
  remediation: set IMGPROXY_SECRET environment variable.
  reference:
    - https://docs.imgproxy.net/configuration/options
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    cvss-score: 7.5
    cpe: cpe:2.3:a:evilmartians:imgproxy:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    shodan-query: html:"imgproxy"
    product: imgproxy
    vendor: evilmartians
  tags: imgproxy,unauth,misconfig
variables:
  img_url: 'https://upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Google_2015_logo.svg/375px-Google_2015_logo.svg.png'

http:
  - method: GET
    path:
      - "{{BaseURL}}/_/resize:fill:10:10:0/gravity:sm/plain/{{img_url}}"

    matchers:
      - type: dsl
        dsl:
          - 'status_code==200'
          - 'contains(content_type, "image/png")'
          - '("386116288" == mmh3(base64_py(body)))'
        condition: and
# digest: 4a0a00473045022100af65fcb564e9bf04aeb44e0e33a63f073c847c89760161ea2bbb8c1736db14f2022065df1ec961c3c778338c31ece08edd64202c9272d93f35594e3cc2750f8ce0ea:922c64590222798bb761d5b6d8e72950

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.

$ nuclei -u "URL" -t "http/misconfiguration/imgproxy-unauth.yaml"

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