CVE-2022-37820 : What You Need to Know

Tenda AX1803 v1.0.0.1 has been identified with a stack overflow vulnerability through the ddnsEn parameter in the function formSetSysToolDDNS.

Understanding CVE-2022-37820

This CVE pertains to a stack overflow issue found in Tenda AX1803 v1.0.0.1, which can be exploited via the ddnsEn parameter.

What is CVE-2022-37820?

CVE-2022-37820 is a vulnerability in Tenda AX1803 v1.0.0.1 that allows for a stack overflow attack using the ddnsEn parameter in the formSetSysToolDDNS function.

The Impact of CVE-2022-37820

The vulnerability could be exploited by attackers to execute malicious code or crash the system, potentially leading to denial of service (DoS) incidents.

Technical Details of CVE-2022-37820

The technical details of CVE-2022-37820 include:

Vulnerability Description

The vulnerability arises from improper handling of user input in the ddnsEn parameter, leading to a stack overflow condition, enabling attackers to manipulate the affected system.

Affected Systems and Versions

Tenda AX1803 v1.0.0.1 is the specific version affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specially designed requests to the ddnsEn parameter, triggering the stack overflow and potentially gaining unauthorized control over the system.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-37820, consider the following steps:

Immediate Steps to Take

Disable remote access if not required.
Regularly monitor for any unusual network activity.

Long-Term Security Practices

Keep systems up to date with the latest security patches.
Implement network intrusion detection/prevention systems.

Patching and Updates

Stay informed about security advisories from Tenda and apply patches promptly to address the CVE-2022-37820 vulnerability.