CVE-2021-45737 : Vulnerability Insights and Analysis

TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow vulnerability in the Form_Login function, allowing attackers to cause a Denial of Service (DoS) via the Host parameter.

Understanding CVE-2021-45737

What is CVE-2021-45737?

CVE-2021-45737 is a vulnerability found in TOTOLINK A720R v4.1.5cu.470_B20200911 that can be exploited by attackers to trigger a Denial of Service (DoS) attack through a stack overflow in the Form_Login function.

The Impact of CVE-2021-45737

This vulnerability can result in a Denial of Service (DoS) attack, disrupting the normal operation of the affected device and potentially leading to service unavailability.

Technical Details of CVE-2021-45737

Vulnerability Description

The vulnerability exists in the Form_Login function of TOTOLINK A720R v4.1.5cu.470_B20200911 due to a stack overflow issue.

Affected Systems and Versions

Product: TOTOLINK A720R v4.1.5cu.470_B20200911
Vendor: TOTOLINK
Version: n/a

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the Host parameter, causing a stack overflow, and launching a Denial of Service (DoS) attack.

Mitigation and Prevention

Immediate Steps to Take

Update TOTOLINK A720R to a patched version to mitigate the vulnerability.
Implement network security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly monitor for security updates and patches from the vendor.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply security patches provided by TOTOLINK promptly to address the stack overflow vulnerability.