CVE-2021-46901 Explained : Impact and Mitigation

CVE-2021-46901 is a vulnerability found in CETIC-6LBR (aka 6lbr) 1.5.0, where a stack-based buffer overflow can occur via a request for a long URL over a 6LoWPAN network.

Understanding CVE-2021-46901

This section provides insights into the nature and impact of CVE-2021-46901.

What is CVE-2021-46901?

CVE-2021-46901 is a security flaw in the httpd.c file of CETIC-6LBR (aka 6lbr) 1.5.0 that can lead to a stack-based buffer overflow by sending a long URL request over a 6LoWPAN network.

The Impact of CVE-2021-46901

This vulnerability allows an attacker to potentially execute arbitrary code or crash the system, posing a significant risk to the security and stability of the network.

Technical Details of CVE-2021-46901

Explore the specific technical aspects of CVE-2021-46901.

Vulnerability Description

The issue arises from a strcat stack-based buffer overflow in the httpd.c file, triggered by long URL requests.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Version: 1.5.0

Exploitation Mechanism

By sending a specially crafted long URL request over a 6LoWPAN network, an attacker can exploit the buffer overflow vulnerability.

Mitigation and Prevention

Discover the steps to mitigate and prevent the impact of CVE-2021-46901.

Immediate Steps to Take

Disable unnecessary services to reduce attack surface
Implement input validation to limit URL length
Monitor network traffic for suspicious activities

Long-Term Security Practices

Regularly update software and firmware
Conduct security assessments and penetration testing
Educate users on safe browsing habits

Patching and Updates

Keep the software updated with the latest patches and security fixes to address the buffer overflow vulnerability.