CVE-2022-36488 : Security Advisory and Response

This article provides details about CVE-2022-36488, focusing on the vulnerability found in TOTOLINK N350RT V9.3.5u.6139_B20201216 firmware.

Understanding CVE-2022-36488

The vulnerability in TOTOLINK N350RT V9.3.5u.6139_B20201216 firmware can lead to a stack overflow through a specific parameter.

What is CVE-2022-36488?

TOTOLINK N350RT V9.3.5u.6139_B20201216 contains a stack overflow vulnerability triggered by the sPort parameter in the function setIpPortFilterRules.

The Impact of CVE-2022-36488

Exploitation of this vulnerability could allow an attacker to execute arbitrary code or crash the device, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2022-36488

This section delves into the technical aspects of the CVE-2022-36488 vulnerability.

Vulnerability Description

The stack overflow vulnerability in TOTOLINK N350RT V9.3.5u.6139_B20201216 firmware occurs due to improper handling of the sPort parameter within the setIpPortFilterRules function.

Affected Systems and Versions

TOTOLINK N350RT V9.3.5u.6139_B20201216 firmware is confirmed to be affected by this vulnerability.

Exploitation Mechanism

An attacker can exploit the sPort parameter to overflow the stack, potentially gaining unauthorized access or disrupting the normal operation of the device.

Mitigation and Prevention

To protect systems from CVE-2022-36488, certain measures need to be taken promptly.

Immediate Steps to Take

Users should update the firmware of TOTOLINK N350RT to a patched version provided by the vendor. Additionally, network access to the device should be restricted.

Long-Term Security Practices

Regular security assessments, network segmentation, and user access control can enhance the overall cybersecurity posture.

Patching and Updates

Stay informed about security updates and patches released by TOTOLINK. Apply patches promptly to mitigate the risk of exploitation.