CVE-2024-6803: Document Management System SQL Vulnerability

CVE-2024-6803 Overview

CVE-2024-6803 is a SQL injection vulnerability in itsourcecode Document Management System 1.0. The flaw resides in the insert.php script, where the anothercont parameter is concatenated into a SQL query without proper sanitization. Authenticated remote attackers can manipulate the parameter to execute arbitrary SQL statements against the backend database. The issue is tracked under VulDB identifier VDB-271705 and maps to [CWE-89]. Public disclosure occurred alongside CVE assignment, and exploit details are available in third-party repositories. The vulnerability affects confidentiality, integrity, and availability of stored document records.

Critical Impact

Remote attackers with low-privilege access can inject SQL through the anothercont parameter in insert.php, exposing or modifying database contents.

Affected Products

• itsourcecode Document Management System 1.0
• insert.php component handling the anothercont parameter
• Deployments using the affected version on network-reachable hosts

Discovery Timeline

• 2024-07-17 - CVE-2024-6803 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-6803

Vulnerability Analysis

The vulnerability is a classic SQL injection issue [CWE-89] in the insert.php endpoint of Document Management System 1.0. User input passed through the anothercont parameter is appended into a SQL statement without parameterization or input validation. An attacker can supply SQL metacharacters and additional clauses to alter query logic, extract data, or modify records. The attack is reachable over the network and requires only low-privilege authentication, making it suitable for opportunistic exploitation against exposed instances.

Root Cause

The root cause is unsafe construction of SQL queries by direct string concatenation of HTTP request parameters. The application does not employ prepared statements, parameterized queries, or server-side input sanitization for the anothercont argument. Any value supplied to this parameter is interpreted as part of the SQL command.

Attack Vector

An attacker sends a crafted HTTP request to insert.php with a malicious anothercont value. The injected payload can use UNION SELECT statements, boolean-based blind techniques, or stacked queries depending on the database driver. Successful exploitation allows reading arbitrary tables, modifying document metadata, or escalating impact through database functions. Technical details are documented in the GitHub CVE Issue Discussion and the VulDB #271705 entry.

Detection Methods for CVE-2024-6803

Indicators of Compromise

• HTTP POST or GET requests to insert.php containing SQL keywords such as UNION, SELECT, OR 1=1, or -- in the anothercont parameter
• Web server access logs showing unusually long or URL-encoded payloads targeting anothercont
• Database error messages or anomalous query patterns originating from the Document Management System application user

Detection Strategies

• Deploy web application firewall (WAF) rules that flag SQL metacharacters submitted to insert.php
• Inspect application and database logs for queries referencing anothercont with concatenated user input
• Correlate authentication events with subsequent high-volume read queries from the same session

Monitoring Recommendations

• Enable verbose query logging on the backend database and alert on UNION or INFORMATION_SCHEMA access from the application service account
• Monitor egress traffic from the web server for signs of bulk data exfiltration
• Track HTTP 500 responses from insert.php, which often indicate injection probing

How to Mitigate CVE-2024-6803

Immediate Actions Required

• Restrict network access to the Document Management System to trusted users and internal networks only
• Audit application logs for prior exploitation attempts against insert.php
• Rotate database credentials used by the application if exploitation is suspected

Patch Information

No official vendor patch is referenced in the NVD record for CVE-2024-6803. Operators should review the VulDB CTI Entry #271705 for any vendor updates and consider replacing the affected component with a maintained alternative if no fix is released.

Workarounds

• Implement WAF signatures blocking SQL metacharacters in the anothercont parameter
• Apply server-side input validation that restricts anothercont to expected characters before reaching the database
• Refactor insert.php locally to use parameterized queries through PDO or mysqli prepared statements
• Run the database account used by the application with least-privilege permissions to limit injection impact

# Example WAF rule (ModSecurity) blocking SQLi patterns in anothercont
SecRule ARGS:anothercont "@rx (?i)(union(\s)+select|or(\s)+1=1|--|;|/\*|information_schema)" \
    "id:1006803,phase:2,deny,status:403,msg:'CVE-2024-6803 SQLi attempt in anothercont'"