CVE-2021-46264 : Exploit Details and Defense Strategies

Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer overflow vulnerability in the onlineList module, allowing attackers to execute a Denial of Service attack.

Understanding CVE-2021-46264

This CVE pertains to a vulnerability in Tenda AC Series Router AC11_V02.03.01.104_CN that enables DoS attacks.

What is CVE-2021-46264?

The vulnerability in the onlineList module of the router can be exploited by attackers to trigger a DoS attack through crafted overflow data.

The Impact of CVE-2021-46264

The vulnerability allows threat actors to disrupt the router's operations, leading to a denial of service condition.

Technical Details of CVE-2021-46264

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

A stack buffer overflow was found in the onlineList module of the Tenda AC Series Router AC11_V02.03.01.104_CN, enabling attackers to disrupt services.

Affected Systems and Versions

Product: Tenda AC Series Router AC11_V02.03.01.104_CN
Vendor: Tenda
Version: All versions impacted

Exploitation Mechanism

Attackers can exploit the vulnerability by sending malicious overflow data to the onlineList module, leading to a DoS situation.

Mitigation and Prevention

Tips to mitigate and prevent the exploitation of CVE-2021-46264.

Immediate Steps to Take

Implement network segmentation to limit the impact of potential attacks.
Regularly update the router firmware to patch known vulnerabilities.

Long-Term Security Practices

Conduct regular security assessments to identify and address weaknesses.
Educate users and administrators on best security practices to prevent attacks.

Patching and Updates

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