CVE-2024-8560 Overview
CVE-2024-8560 is a SQL injection vulnerability in SourceCodester Simple Invoice Generator System 1.0. The flaw resides in the /save_invoice.php endpoint, where user-supplied parameters are concatenated into SQL statements without sanitization. Attackers can manipulate the invoice_code, customer, cashier, total_amount, discount_percentage, discount_amount, and tendered_amount arguments to inject arbitrary SQL. The exploit requires network access and low privileges, and public disclosure of the technique has occurred. The weakness is tracked under [CWE-89]: Improper Neutralization of Special Elements used in an SQL Command.
Critical Impact
Remote authenticated attackers can inject SQL through multiple parameters in /save_invoice.php to read, modify, or delete invoice database records.
Affected Products
- Oretnom23 Simple Invoice Generator System 1.0
- SourceCodester distribution of Simple Invoice Generator System
- CPE: cpe:2.3:a:oretnom23:simple_invoice_generator_system:1.0
Discovery Timeline
- 2024-09-07 - CVE-2024-8560 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-8560
Vulnerability Analysis
The vulnerability is a SQL injection flaw in the invoice save handler of Simple Invoice Generator System 1.0. The /save_invoice.php script accepts POST parameters from the invoicing form and passes them directly into a database query. Because the application does not use parameterized queries or input validation, attackers can break out of the intended SQL context. Successful injection allows manipulation of the underlying invoice database. An attacker with a valid low-privilege session can read arbitrary tables, alter financial records, or drop data.
Root Cause
The root cause is improper neutralization of special characters in SQL statements [CWE-89]. The affected script concatenates request parameters into query strings without prepared statements or escaping. Any parameter among invoice_code, customer, cashier, total_amount, discount_percentage, discount_amount, or tendered_amount can carry an injection payload.
Attack Vector
Exploitation occurs remotely over the network against the web interface. The attacker submits a crafted POST request to /save_invoice.php with SQL metacharacters embedded in one or more vulnerable parameters. Low-privilege authentication is required, but no user interaction is needed. Public disclosure means proof-of-concept techniques are documented in the VulDB entry #276780.
No verified exploit code is republished here. Refer to the VulDB CTI record for technical indicators supplied by the original submitter.
Detection Methods for CVE-2024-8560
Indicators of Compromise
- POST requests to /save_invoice.php containing SQL metacharacters such as single quotes, UNION SELECT, --, /*, or OR 1=1 within form parameters.
- Unexpected outbound database errors or HTTP 500 responses returned from the invoice save endpoint.
- New or modified rows in the invoice tables with malformed values in numeric fields like total_amount or discount_percentage.
Detection Strategies
- Deploy web application firewall (WAF) signatures that inspect POST bodies to /save_invoice.php for SQL injection patterns.
- Enable database query logging and alert on queries containing suspicious concatenations against invoice tables.
- Correlate authenticated session identifiers with anomalous parameter lengths or non-numeric input in numeric fields.
Monitoring Recommendations
- Review web server access logs for repeated requests to /save_invoice.php from a single source within a short window.
- Monitor application error logs for SQL syntax errors originating from the invoice module.
- Track privileged database account activity for unexpected schema reads following invoice submissions.
How to Mitigate CVE-2024-8560
Immediate Actions Required
- Restrict access to the Simple Invoice Generator System 1.0 web interface using network ACLs or VPN until a vendor fix is available.
- Rotate credentials for any accounts that could access /save_invoice.php, as public exploit disclosure has occurred.
- Audit the invoice database for unauthorized modifications, inserted rows, or data exfiltration attempts.
Patch Information
No vendor patch has been published in the referenced advisories. The SourceCodester project page hosts the original distribution but does not list a fixed release for CVE-2024-8560. Organizations should treat Simple Invoice Generator System 1.0 as unmaintained and plan migration or in-house remediation.
Workarounds
- Modify /save_invoice.php to use prepared statements with parameter binding (for example, PDO or mysqli_prepare) instead of string concatenation.
- Apply server-side input validation that rejects non-numeric values in total_amount, discount_percentage, discount_amount, and tendered_amount.
- Place the application behind a WAF with SQL injection rulesets enabled and block requests containing SQL metacharacters in the vulnerable parameters.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
