| 제목 | Kushan2k student-management-system 1.0 SQL Injection |
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| 설명 | The certificate verification endpoint (`GradeController.php`) accepts a `nic` (National Identity Card) number via POST and passes it directly to the `getStatus()` method in `User.php`. That method embeds the input into an SQL query without any parameterisation or escaping:
```php
// config/User.php
$res = $this->db->query("... WHERE student.NIC={$index} OR student.student_id='{$index}' OR registrations.cetificate_no='{$index}'");
```
The resulting student ID is then written to the session and the user is redirected to the mycourse page:
// controllers/GradeController.php
$nic = htmlspecialchars($_POST['nic']);
$id = $user->getStatus($nic);
if($id!=null && $id>0){
$_SESSION['user_id'] = $id;
header("Location:../view/mycourse.view.php",true);
}
An attacker can inject a boolean-based payload (e.g., 0 OR 1=1 --) into the nic parameter. This alters the query to return the first student ID matching the always‑true condition, thereby bypassing the intended certificate verification entirely. The session is then populated with that student’s ID, and the attacker can view that student’s personal information, enrolled courses, and other sensitive data. |
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| 원천 | ⚠️ https://github.com/Kushan2k/student-management-system/issues/2 |
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| 사용자 | ChenI (UID 98309) |
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| 제출 | 2026. 05. 20. AM 08:23 (20 날 ago) |
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| 모더레이션 | 2026. 06. 07. AM 11:38 (18 days later) |
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| 상태 | 수락 |
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| VulDB 항목 | 369095 [Kushan2k student-management-system 까지 f16a4ceaddd6729c4b306ed4641cda3176c1ef2a Certificate Verification Endpoint GradeController.php getStatus nic SQL 주입] |
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| 포인트들 | 20 |
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