CVE-2024-4933: Simple Online Bidding System SQLi Flaw

CVE-2024-4933 Overview

CVE-2024-4933 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/admin/index.php?page=manage_product endpoint, where the id parameter is passed unsanitized into a backend SQL query. An authenticated remote attacker can manipulate the id argument to inject arbitrary SQL statements. The issue is tracked as VDB-264469 and is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). A public proof-of-concept has been disclosed, increasing the likelihood of opportunistic exploitation against exposed installations.

Critical Impact

Attackers with low-privileged access can extract, modify, or delete data from the application database by injecting SQL through the id parameter on the admin product management page.

Affected Products

• Oretnom23 Simple Online Bidding System 1.0
• CPE: cpe:2.3:a:oretnom23:simple_online_bidding_system:1.0:*:*:*:*:*:*:*
• Component: oretnom23:simple_online_bidding_system

Discovery Timeline

• 2024-05-16 - CVE-2024-4933 published to NVD
• 2024-12-09 - Last updated in NVD database

Technical Details for CVE-2024-4933

Vulnerability Analysis

The vulnerability exists in the administrative interface of Simple Online Bidding System 1.0. The script admin/index.php accepts a page parameter that loads the manage_product module. That module reads the id query string parameter and concatenates it directly into a SQL statement used to retrieve product records.

Because the input is neither validated nor parameterized, an attacker can break out of the original query context and append arbitrary SQL clauses. The vulnerability is reachable over the network and requires only low-privileged access to the admin module. Public disclosure of working exploit details on GitHub raises the exposure level for any internet-facing instance.

Root Cause

The root cause is improper neutralization of user-supplied input in SQL statement construction [CWE-89]. The application interpolates the id GET parameter into a query string rather than binding it as a parameter through prepared statements. Standard defenses such as input whitelisting, type casting to integer, or use of PDO/MySQLi prepared statements are absent in the affected code path.

Attack Vector

An attacker authenticated to the admin interface sends a crafted HTTP GET request to index.php?page=manage_product&id=<payload>. The injected payload can use UNION-based, boolean-based, or time-based techniques to read database contents, dump credential hashes, or modify records. Because the affected endpoint is part of the admin panel, an attacker who has obtained low-privileged credentials, or who chains this with another flaw to gain initial access, can pivot to full database compromise.

No verified exploit code is included here. Technical details and a proof-of-concept are documented in the GitHub PoC for SQL Injection and VulDB entry #264469.

Detection Methods for CVE-2024-4933

Indicators of Compromise

• HTTP requests to /simple-online-bidding-system/admin/index.php with a page=manage_product parameter and an id value containing SQL syntax such as UNION, SELECT, SLEEP(, --, ', or 0x.
• Web server access logs showing repeated requests to manage_product with varying id values within short time windows, consistent with automated SQLi tooling.
• Unexpected database errors or query latency spikes correlated with requests to the admin product page.

Detection Strategies

• Deploy web application firewall (WAF) rules that inspect query string parameters for SQL injection signatures on the manage_product endpoint.
• Enable verbose query logging in MySQL/MariaDB and alert on queries against the product table containing tautologies or stacked statements.
• Correlate admin authentication events with subsequent manage_product requests to identify abuse of compromised low-privileged accounts.

Monitoring Recommendations

• Monitor outbound traffic from the web server for unusual data volumes that may indicate database exfiltration.
• Track failed and successful logins to the admin panel and flag accounts that issue large numbers of parameterized id requests.
• Baseline normal manage_product request patterns and alert on deviations in parameter length, character set, or frequency.

How to Mitigate CVE-2024-4933

Immediate Actions Required

• Restrict network access to the /admin/ path of Simple Online Bidding System using IP allowlisting or VPN-only access until a patch is available.
• Rotate all admin credentials and audit recent activity on the admin product management page for signs of exploitation.
• Deploy WAF rules that block SQL metacharacters in the id parameter on the manage_product endpoint.

Patch Information

No official vendor patch is currently referenced in the NVD or VulDB entries for Simple Online Bidding System 1.0. Organizations running this application should monitor the SourceCodester project page for updates and consider replacing the deployment if no fix is released. As an interim code-level remediation, replace string concatenation in the affected query with parameterized statements and cast id to an integer before use.

Workarounds

• Modify the vulnerable PHP code to validate that id is a positive integer using intval() or filter_var($id, FILTER_VALIDATE_INT) before it reaches the SQL layer.
• Refactor the database access to use prepared statements via PDO or MySQLi with bound parameters.
• Apply database-level least privilege so the web application account cannot read or modify tables outside the application schema.

# Configuration example: ModSecurity rule to block SQLi against manage_product
SecRule REQUEST_URI "@contains /simple-online-bidding-system/admin/index.php" \
  "chain,phase:2,deny,status:403,id:1004933,msg:'Possible CVE-2024-4933 SQLi attempt'"
  SecRule ARGS:id "@rx (?i)(union|select|sleep\(|--|';|0x[0-9a-f]+)" "t:none,t:urlDecode"