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How the Vulnerability Works
The CVE-2025-4941 vulnerability exists in PHPGurukul Credit Card Application Management System 1.0 within the `/admin/index.php` file. The flaw occurs due to improper sanitization of the `Username` parameter during authentication. Attackers can craft malicious SQL queries by injecting payloads through this parameter, enabling unauthorized database access. The system fails to implement prepared statements or input validation, allowing direct concatenation of user-supplied data into SQL queries. Remote exploitation is possible without authentication, making this particularly dangerous. Successful attacks could lead to full database compromise, including extraction of credit card details and admin credentials.
DailyCVE Form
Platform: PHPGurukul CMS
Version: 1.0
Vulnerability: SQL Injection
Severity: Critical
Date: 05/27/2025
Prediction: Patch by 06/15/2025
What Undercode Say:
Exploitation POC
curl -X POST "http://target/admin/index.php" \
-d "Username=admin' OR 1=1-- -&Password=any"
SQLMAP Command
sqlmap -u "http://target/admin/index.php" \
--data="Username=test&Password=test" \
-p Username --risk=3 --level=5
Mitigation Code
$stmt = $conn->prepare("SELECT FROM users WHERE username = ?");
$stmt->bind_param("s", $_POST['Username']);
WAF Rule
SecRule ARGS:Username "@detectSQLi" \
"id:10005,deny,status:403,msg:'SQLi Attempt'"
Detection Signature
alert tcp any any -> $HTTP_SERVERS 80 \
(msg:"PHPGurukul SQLi Attempt"; \
content:"Username="; nocase; pcre:"/(\')|(--)/";)
Database Hardening
REVOKE ALL PRIVILEGES ON . FROM 'appuser'@'%';
GRANT SELECT ONLY ON cc_db. TO 'appuser'@'localhost';
Patch Verification
SELECT FROM users WHERE username = '''test''';
-- Should return syntax error if patched
Log Analysis Command
grep -E "POST /admin/index.php" access.log | \
grep -i "'|--|1=1"
Temporary Fix
if (preg_match("/['\"]/", $_POST['Username'])) {
die("Invalid characters detected");
}
Backup Command
mysqldump -u root -p --opt cc_db > backup_prepatch.sql
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
