CVE-2024-4930: Simple Online Bidding System SQLi Flaw

CVE-2024-4930 Overview

CVE-2024-4930 is a SQL injection vulnerability in SourceCodester Simple Online Bidding System 1.0, developed by oretnom23. The flaw resides in the /simple-online-bidding-system/index.php?page=view_prod endpoint, where the id parameter is passed to a database query without proper sanitization. Remote attackers with low privileges can manipulate the id argument to inject arbitrary SQL statements. The exploit has been publicly disclosed and is tracked as VulDB entry #264466. The vulnerability is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command.

Critical Impact
Remote attackers can extract, modify, or delete database contents through crafted requests to the vulnerable id parameter, compromising confidentiality and integrity of bidding data.

Affected Products

SourceCodester Simple Online Bidding System 1.0
oretnom23 simple_online_bidding_system (CPE: cpe:2.3:a:oretnom23:simple_online_bidding_system:1.0)
The view_prod page component (/simple-online-bidding-system/index.php?page=view_prod)

Discovery Timeline

2024-05-16 - CVE-2024-4930 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-4930

Vulnerability Analysis

The vulnerability is a classic SQL injection flaw in the product view functionality of the Simple Online Bidding System. When a user navigates to /simple-online-bidding-system/index.php?page=view_prod, the application accepts an id GET parameter that identifies the product record to display. The application concatenates this parameter directly into a SQL query without parameterization or input validation. Attackers can supply crafted id values containing SQL syntax to alter query logic, extract data via UNION-based payloads, or blind out-of-band techniques. The attack requires only network access and low-level authentication to the application.

Root Cause

The root cause is improper neutralization of user-supplied input in a SQL statement [CWE-89]. The id parameter received from the client is interpolated into the database query without prepared statements, parameter binding, or escaping. PHP applications built on unmodified MySQL functions such as mysqli_query or the deprecated mysql_query are typical carriers of this class of defect.

Attack Vector

The attack vector is network-based and requires a low privilege account on the application. An attacker sends a crafted HTTP GET request with a malicious id value to the view_prod page. Successful exploitation allows enumeration of database schema, extraction of user credentials and bid records, and possibly modification of auction data. The vulnerability mechanism and a proof of concept are documented in the public PoC repository on GitHub and detailed in the VulDB entry #264466. No verified code snippet is reproduced here; refer to those sources for payload details.

Detection Methods for CVE-2024-4930

Indicators of Compromise

HTTP requests to /simple-online-bidding-system/index.php?page=view_prod with id parameter values containing SQL metacharacters such as single quotes, UNION, SELECT, --, /*, or SLEEP(.
Web server access logs showing repeated requests to the view_prod endpoint from a single source with varying id values indicative of automated enumeration.
Database error messages returned in HTTP responses, such as MySQL syntax errors referencing the id column.
Anomalous outbound traffic from the web server to attacker-controlled hosts, consistent with out-of-band SQL injection exfiltration.

Detection Strategies

Deploy web application firewall (WAF) rules that inspect GET parameters on the view_prod endpoint for SQL injection signatures.
Enable database query logging and alert on queries containing tautologies such as OR 1=1, boolean-based patterns, or UNION SELECT against internal schema tables like information_schema.
Correlate application logs with database logs to identify requests that generate abnormal query patterns or execution times.

Monitoring Recommendations

Monitor HTTP 500 responses and MySQL error strings surfacing to clients, which indicate injection probing.
Track request rate and parameter entropy against index.php?page=view_prod to identify automated scanners.
Alert on new administrative or high-privilege database sessions originating from the application service account.

How to Mitigate CVE-2024-4930

Immediate Actions Required

Restrict or remove public exposure of the Simple Online Bidding System 1.0 application until a fix is applied.
Rewrite the view_prod handler in index.php to use parameterized queries or prepared statements via PDO or mysqli with bound parameters.
Validate and cast the id parameter to an integer before use in any SQL query.
Rotate database credentials and audit bidding records for signs of tampering.

Patch Information

No official vendor patch has been published for SourceCodester Simple Online Bidding System 1.0 at the time of writing. The vendor advisory URLs list in the CVE record is empty. Administrators should apply source-level fixes based on the CWE-89 remediation guidance and secure coding standards, or migrate to an actively maintained bidding platform.

Workarounds

Deploy a WAF rule to block requests to /simple-online-bidding-system/index.php?page=view_prod where the id parameter contains non-numeric characters.
Enforce input validation at the reverse proxy layer, rejecting id values that do not match a strict integer regex such as ^[0-9]+$.
Apply least-privilege principles to the database account used by the application, revoking DDL and cross-database permissions.
Disable verbose SQL error output in the PHP configuration by setting display_errors = Off in php.ini to prevent information disclosure during probing.

bash

# Example WAF rule (ModSecurity) to filter non-integer id values on the vulnerable endpoint
SecRule REQUEST_URI "@contains /simple-online-bidding-system/index.php" \
    "chain,phase:2,deny,status:403,id:1004930,msg:'CVE-2024-4930 SQLi attempt'"
    SecRule ARGS:id "!@rx ^[0-9]+$" "t:none"