CVE-2023-44020 : What You Need to Know

This article provides insights into CVE-2023-44020, a vulnerability affecting Tenda AC10U v1.0 US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01 router firmware.

Understanding CVE-2023-44020

CVE-2023-44020 is a stack overflow vulnerability discovered in the Tenda AC10U router firmware, specifically in the formWifiBasicSet function.

What is CVE-2023-44020?

CVE-2023-44020 refers to a security issue in the Tenda AC10U v1.0 router firmware that allows attackers to trigger a stack overflow by manipulating the security parameter.

The Impact of CVE-2023-44020

This vulnerability could be exploited by threat actors to execute arbitrary code or crash the affected device, leading to a denial of service (DoS) condition.

Technical Details of CVE-2023-44020

The following details shed light on the technical aspects of CVE-2023-44020:

Vulnerability Description

The stack overflow vulnerability in the Tenda AC10U firmware arises due to insufficient input validation in the formWifiBasicSet function, allowing attackers to overwrite the stack memory.

Affected Systems and Versions

The Tenda AC10U v1.0 US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01 firmware version is confirmed to be affected by this vulnerability.

Exploitation Mechanism

Exploitation of CVE-2023-44020 involves crafting malicious input related to the security parameter, which, when processed by the formWifiBasicSet function, triggers the stack overflow.

Mitigation and Prevention

To address CVE-2023-44020, users and administrators can take the following steps:

Immediate Steps to Take

Disable remote access where possible and implement network segmentation to limit the exposure of the affected device.
Regularly monitor vendor updates and security advisories for patches or workarounds.

Long-Term Security Practices

Conduct regular security assessments and penetration testing of network devices to identify and remediate vulnerabilities proactively.
Educate users and staff on best practices for securing network infrastructure and devices.

Patching and Updates

Apply firmware updates or patches provided by Tenda to mitigate the CVE-2023-44020 vulnerability and enhance the security posture of the affected devices.