CVE-2024-33970 Overview
CVE-2024-33970 is a SQL injection vulnerability affecting multiple Janobe products, including PayPal, Credit Card, and Debit Card Payment version 1.0. The flaw resides in the studid parameter handled by /candidate/controller.php. An unauthenticated attacker can send a specially crafted query to the vulnerable endpoint and extract arbitrary data from the backing database. The issue is classified under [CWE-89] (Improper Neutralization of Special Elements used in an SQL Command) and is reachable over the network without user interaction.
Critical Impact
Unauthenticated remote attackers can retrieve all information stored in the application database through the studid parameter in /candidate/controller.php.
Affected Products
- Janobe PayPal 1.0
- Janobe Credit Card 1.0 and Debit Card Payment 1.0
- Janobe School Attendance Monitoring System 1.0 and School Event Management System 1.0
Discovery Timeline
- 2024-08-06 - CVE-2024-33970 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-33970
Vulnerability Analysis
The vulnerability is a classic SQL injection in the studid parameter consumed by /candidate/controller.php. The application concatenates user-supplied input directly into a SQL statement without parameterization or sanitization. An attacker submits crafted input that breaks out of the intended query context and appends additional SQL clauses.
Because the endpoint is reachable without authentication, an attacker only needs network access to the web application. Successful exploitation enables data exfiltration through standard techniques such as UNION-based extraction, error-based extraction, or boolean and time-based blind injection. The advisory issued by INCIBE confirms the parameter and endpoint as the injection sink.
Root Cause
The root cause is the absence of prepared statements or input validation when constructing SQL queries from the studid request parameter. Janobe applications appear to share a common code base that propagates the same unsafe pattern across several products, which explains why five distinct Janobe applications are listed as affected.
Attack Vector
The attack vector is network-based and unauthenticated. An adversary sends an HTTP request to /candidate/controller.php with a malicious studid value. The CVSS impact metrics indicate the vulnerability primarily affects confidentiality, which aligns with database read operations such as enumerating tables, dumping user records, and extracting credentials or payment-related metadata stored by the application.
No verified public proof-of-concept code is available. The vulnerability mechanism is described in prose in the INCIBE Security Notice.
Detection Methods for CVE-2024-33970
Indicators of Compromise
- HTTP requests to /candidate/controller.php containing SQL metacharacters such as ', ", --, UNION, SLEEP(, or INFORMATION_SCHEMA in the studid parameter.
- Web server access logs showing repeated requests to the same endpoint with incrementally changing payload structures, consistent with automated tools such as sqlmap.
- Database error messages returned in HTTP responses referencing MySQL or MariaDB syntax errors tied to the studid query.
Detection Strategies
- Deploy web application firewall (WAF) rules that inspect the studid parameter for SQL injection signatures and block known evasion patterns.
- Enable database query logging and alert on unexpected queries against sensitive tables originating from the web application service account.
- Correlate web access logs with database audit logs to identify request-to-query patterns indicative of injection.
Monitoring Recommendations
- Monitor outbound traffic from the application server for unusual data volumes that could indicate database exfiltration.
- Track HTTP response sizes and status codes on /candidate/controller.php; large or anomalous responses warrant investigation.
- Alert on user-agent strings associated with automated SQL injection tooling.
How to Mitigate CVE-2024-33970
Immediate Actions Required
- Restrict network exposure of affected Janobe applications until a vendor patch is verified, ideally placing them behind authenticated VPN access or IP allow-listing.
- Deploy WAF signatures that block SQL injection attempts targeting the studid parameter on /candidate/controller.php.
- Audit the database account used by the application and reduce its privileges to the minimum required for normal operation.
- Review historical web and database logs for prior exploitation evidence dating back to the application's deployment.
Patch Information
No vendor advisory or fixed version has been published in the CVE record. Administrators should consult the INCIBE Security Notice on Janobe Vulnerabilities for the latest vendor coordination status and apply any subsequent vendor updates as they are released.
Workarounds
- Modify the application code to use parameterized queries or prepared statements for all database interactions involving studid and other user-controlled inputs.
- Apply server-side input validation that enforces a strict numeric type for studid before it reaches the database layer.
- Configure the database account to deny access to tables that are not required by the /candidate/controller.php workflow.
- If the affected module is not in active use, disable or remove /candidate/controller.php from the deployment.
# Example WAF rule snippet (ModSecurity) to block SQLi patterns in studid
SecRule ARGS:studid "@rx (?i)(union(\s|\+)+select|sleep\(|information_schema|--|/\*)" \
"id:1003397,phase:2,deny,status:403,msg:'CVE-2024-33970 SQLi attempt on studid'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
