A major SQL Injection vulnerability has been discovered in the D-Link Online Behavior Audit Gateway DAR-700 V31R02B1413C. The vulnerability, assigned the CVE identifier CVE-2023-44693, affects the importexport.php script and can allow attackers to execute arbitrary SQL queries by sending specially crafted requests to the server. This issue poses a severe risk, as unauthorized users can potentially retrieve sensitive information or even gain full control of the system. In this long read post, we'll discuss the details of the vulnerability, showcase code snippets, and provide references that will help better comprehend the severity of this security flaw.
Vulnerability Details
The vulnerability affecting the D-Link Online Behavior Audit Gateway is an SQL Injection flaw in the importexport.php script. When an attacker sends a specially crafted request to the server, they can manipulate the SQL query by injecting their code. The issue stems from the lack of proper input validation and sanitization, leaving the system vulnerable to exploitation. In simpler terms, the software fails to efficiently check whether the data received is genuine or malicious.
Exploit
The following code snippet demonstrates an HTTP request that can exploit the SQL Injection vulnerability:
POST /importexport.php HTTP/1.1
Host: <Target IP>
Content-Type: application/x-www-form-urlencoded
Content-Length: <Length>
Cookie: <Target Cookies>
Payload
query=SELECT * FROM information_schema.tables WHERE table_schema=database(); --+
This payload, when sent with the correct headers, triggers the SQL Injection vulnerability and allows the attacker to enumerate the database tables.
Mitigation
D-Link has not yet released any patches or updates to address this vulnerability. As a temporary measure, users are advised to restrict access to the importexport.php file and ensure strong network segmentation is in place to prevent unauthorized access. Additionally, closely monitoring the logs for any suspicious activity could help detect potential attacks early on.
For more information on the CVE-2023-44693 vulnerability, please check the following resources
1. CVE-2023-44693 Official CVE Record
2. D-Link Official Website
3. SQL Injection Attacks and Defense Techniques
Conclusion
The SQL Injection vulnerability in the D-Link Online Behavior Audit Gateway DAR-700 V31R02B1413C exposes systems to potential attacks, allowing malicious users to access sensitive data or compromise the system entirely. It is essential to stay aware of the issue and promptly apply any patches or updates released to address this critical security flaw.
Make sure to keep your systems up to date and maintain a robust security posture by closely monitoring your network and app logs. Educating yourself on the different types of exploits and vulnerabilities will help better protect your software and systems in the long run, reducing the risk of cyber attacks.
Timeline
Published on: 10/17/2023 06:15:09 UTC
Last modified on: 10/20/2023 18:10:26 UTC