CVE-2022-26009 : Exploit Details and Defense Strategies

A stack-based buffer overflow vulnerability has been identified in the confsrv ucloud_set_node_location functionality of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14. Malicious network packets can exploit this vulnerability, leading to a stack-based buffer overflow with high impact on confidentiality, integrity, and availability.

Understanding CVE-2022-26009

This CVE details a critical vulnerability in the TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14, which can be exploited by attackers to trigger a stack-based buffer overflow.

What is CVE-2022-26009?

The CVE-2022-26009 vulnerability is a stack-based buffer overflow issue in the confsrv ucloud_set_node_location feature of TCL LinkHub Mesh Wi-Fi MS1G_00_01.00_14, which can be abused by sending specially-crafted network packets.

The Impact of CVE-2022-26009

This vulnerability has a high severity level, with a CVSS base score of 8.8 out of 10. It affects confidentiality, integrity, and availability, allowing an attacker to execute arbitrary code or crash the system.

Technical Details of CVE-2022-26009

The vulnerability stems from improper handling of network packets by the affected device, leading to a buffer overflow condition. Below are the technical details:

Vulnerability Description

The stack-based buffer overflow vulnerability in the confsrv ucloud_set_node_location function allows an attacker to send a specially-crafted packet to trigger the overflow, potentially leading to code execution.

Affected Systems and Versions

Affected Product: LinkHub Mesh Wifi
Vendor: TCL
Affected Version: MS1G_00_01.00_14

Exploitation Mechanism

With a low attack complexity and requiring no privileges, an attacker can exploit this vulnerability easily by sending a malicious network packet on the adjacent network.

Mitigation and Prevention

To safeguard systems against CVE-2022-26009, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Apply patches provided by TCL promptly to address the vulnerability.
Restrict network access and filter incoming traffic to prevent malicious packets.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement network segmentation and access controls to limit the attack surface.

Patching and Updates

Stay informed about security advisories from TCL and apply updates promptly to secure your devices.