CVE-2023-38935 : What You Need to Know

A detailed overview of CVE-2023-38935 highlighting the vulnerability found in Tenda AC series routers.

Understanding CVE-2023-38935

In this section, we will delve into the specifics of CVE-2023-38935, a vulnerability affecting Tenda AC series routers.

What is CVE-2023-38935?

CVE-2023-38935 involves a stack overflow vulnerability discovered in Tenda AC1206 V15.03.06.23, AC8 V4 V16.03.34.06, AC5 V1.0 V15.03.06.28, AC10 v4.0 V16.03.10.13, and AC9 V3.0 V15.03.06.42_multi routers through the list parameter in the formSetQosBand function.

The Impact of CVE-2023-38935

This vulnerability could potentially allow attackers to execute arbitrary code or disrupt services on the affected routers, leading to a compromise of network security and user data.

Technical Details of CVE-2023-38935

Let's explore the technical aspects of CVE-2023-38935 in this section.

Vulnerability Description

The stack overflow vulnerability in Tenda routers occurs due to improper handling of user-supplied input, specifically in the list parameter within the formSetQosBand function.

Affected Systems and Versions

The following Tenda router models and firmware versions have been confirmed to be affected: AC1206 V15.03.06.23, AC8 V4 V16.03.34.06, AC5 V1.0 V15.03.06.28, AC10 v4.0 V16.03.10.13, and AC9 V3.0 V15.03.06.42_multi.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted requests containing malicious input to the list parameter, triggering a stack overflow condition and potentially gaining unauthorized access to the router.

Mitigation and Prevention

Discover the best practices to mitigate and prevent the exploitation of CVE-2023-38935 in this section.

Immediate Steps to Take

Update the firmware of Tenda AC series routers to the latest version provided by the manufacturer.
Restrict network access to vulnerable devices and implement strong firewall rules.

Long-Term Security Practices

Regularly monitor for security updates and patches released by Tenda to address known vulnerabilities.
Conduct periodic security audits and assessments to identify and remediate potential risks.

Patching and Updates

Stay proactive by applying security patches and updates to Tenda routers promptly to enhance network security and prevent exploitation of vulnerabilities like CVE-2023-38935.