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Noptin < 1.6.5 - Open Redirect

ID: CVE-2021-25033

Severity: medium

Author: dhiyaneshDk

Tags: cve2021,cve,wp,wpscan,wordpress,redirect,wp-plugin,noptin

Description

Section titled “Description”

Noptin < 1.6.5 is susceptible to an open redirect vulnerability. The plugin does not validate the “to” parameter before redirecting the user to its given value, leading to an open redirect issue.

YAML Source

Section titled “YAML Source”
id: CVE-2021-25033


info:
  name: Noptin < 1.6.5 - Open Redirect
  author: dhiyaneshDk
  severity: medium
  description: Noptin < 1.6.5 is susceptible to an open redirect vulnerability. The plugin does not validate the "to" parameter before redirecting the user to its given value, leading to an open redirect issue.
  impact: |
    An attacker can trick users into visiting malicious websites, leading to phishing attacks.
  remediation: |
    Update to Noptin plugin version 1.6.5 or later.
  reference:
    - https://wpscan.com/vulnerability/c2d2384c-41b9-4aaf-b918-c1cfda58af5c
    - https://plugins.trac.wordpress.org/changeset/2639592
    - https://nvd.nist.gov/vuln/detail/CVE-2021-25033
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2021-25033
    cwe-id: CWE-601
    epss-score: 0.001
    epss-percentile: 0.41295
    cpe: cpe:2.3:a:noptin:noptin:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: noptin
    product: noptin
    framework: wordpress
  tags: cve2021,cve,wp,wpscan,wordpress,redirect,wp-plugin,noptin


http:
  - method: GET
    path:
      - "{{BaseURL}}/?noptin_ns=email_click&to=https://interact.sh"


    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1
# digest: 4b0a00483046022100b09a14e46c56c161d25573d1f900f80aa537ae8bb276c27975e6b5973b2b8908022100917019f64f513484a43d7f9568a376859ad1fcd79c6391afd697007f69a2b063:922c64590222798bb761d5b6d8e72950

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/2021/CVE-2021-25033.yaml"

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