EUVD-2025-18659
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Description
CloudClassroom-PHP-Project v1.0 contains a critical SQL Injection vulnerability in the loginlinkadmin.php component. The application fails to sanitize user-supplied input in the admin login form before directly including it in SQL queries. This allows unauthenticated attackers to inject arbitrary SQL payloads and bypass authentication, gaining unauthorized administrative access. The vulnerability is triggered when an attacker supplies specially crafted input in the username field, such as ' OR '1'='1, leading to complete compromise of the login mechanism and potential exposure of sensitive backend data.
Analysis
CloudClassroom-PHP-Project v1.0 contains a critical SQL injection vulnerability in the loginlinkadmin.php component that allows unauthenticated attackers to bypass authentication and gain unauthorized administrative access by injecting malicious SQL payloads into the username field. With a CVSS score of 9.8 and network-accessible attack vector requiring no privileges or user interaction, this vulnerability poses immediate and severe risk to all deployments. While specific KEV status and EPSS data were not provided in the intelligence sources, the combination of complete authentication bypass capability, high CVSS score, and trivial exploitation complexity suggests this is actively exploitable and likely to be targeted by opportunistic attackers.
Technical Context
The vulnerability exists in CloudClassroom-PHP-Project v1.0, a PHP-based educational management application. The root cause is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), a critical input validation flaw where user-supplied data from the admin login form's username parameter is directly concatenated into SQL queries without parameterized queries or input sanitization. The application likely constructs queries using string concatenation (e.g., "SELECT * FROM admins WHERE username='" . $_POST['username'] . "'") rather than prepared statements with bound parameters. The loginlinkadmin.php file serves as the entry point for administrative authentication, making it a high-value target. This is a classic presentation-layer vulnerability in PHP applications that predate modern security practices like PDO prepared statements or parameterized queries.
Affected Products
Affected Product: CloudClassroom-PHP-Project; Affected Version: v1.0; Component: loginlinkadmin.php (admin login form); Attack Vector: Username input field in authentication form. Inferred CPE (based on available data): cpe:2.3:a:cloudclassroom:cloudclassroom-php-project:1.0:*:*:*:*:php:*:*. Note: This appears to be a community or open-source project; vendor advisories and official CVE references from NVD or vendor sources were not provided in the intelligence data. Users of CloudClassroom-PHP-Project v1.0 deployed in any environment (production, staging, development) are affected. No indication of patched versions or vendor advisories was provided in the source material.
Remediation
Immediate Remediation Steps: (1) CRITICAL: Apply parameterized queries/prepared statements - replace all string concatenation in SQL queries with prepared statement bindings (e.g., PDO prepared statements with placeholders or MySQLi prepared statements). Rewrite loginlinkadmin.php to use: $stmt = $pdo->prepare('SELECT * FROM admins WHERE username = ?'); $stmt->execute([$_POST['username']]); (2) Input Validation: Implement strict input validation on the username field - whitelist allowed characters, enforce length limits, and reject special SQL metacharacters if parameterized queries cannot be immediately deployed. (3) Patch: Check CloudClassroom project repository (likely GitHub) for v1.1 or later releases. If the project is abandoned, consider forking and patching or migrating to maintained alternatives. (4) Temporary Mitigation (if patching is delayed): Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the username parameter; restrict access to loginlinkadmin.php to known IP ranges if possible. (5) Post-Remediation: Audit all other PHP input points for similar SQL injection vulnerabilities; migrate entire application to ORM or query builder frameworks (e.g., Doctrine, Eloquent). No official vendor patch link was provided in the intelligence sources; contact project maintainers or check GitHub repository directly.
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