CVE-2023-49418 : Security Advisory and Response

This article provides detailed information about CVE-2023-49418, a vulnerability found in TOTOLink A7000R V9.1.0u.6115_B20201022 that can be exploited through a stack overflow via setIpPortFilterRules.

Understanding CVE-2023-49418

This section will cover what CVE-2023-49418 entails and the potential impact it may have.

What is CVE-2023-49418?

CVE-2023-49418 is a vulnerability identified in TOTOLink A7000R V9.1.0u.6115_B20201022 that allows for a stack overflow attack through the setIpPortFilterRules function.

The Impact of CVE-2023-49418

The vulnerability could allow an attacker to execute arbitrary code or disrupt the normal operation of the device, potentially leading to a full system compromise.

Technical Details of CVE-2023-49418

In this section, we will delve into the specifics of the vulnerability, including affected systems, exploitation mechanisms, and more.

Vulnerability Description

The vulnerability in TOTOLink A7000R V9.1.0u.6115_B20201022 arises from improper handling of data within the setIpPortFilterRules function, leading to a stack overflow condition.

Affected Systems and Versions

As of the latest information available, all versions of TOTOLink A7000R V9.1.0u.6115_B20201022 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specifically designed input to trigger a stack overflow, potentially gaining unauthorized access or disrupting the device's functionality.

Mitigation and Prevention

This section outlines the steps to mitigate the risks posed by CVE-2023-49418 and secure systems against such vulnerabilities.

Immediate Steps to Take

Apply security patches provided by the vendor to address the vulnerability in TOTOLink A7000R V9.1.0u.6115_B20201022.
Implement network segmentation and access controls to limit the attack surface.

Long-Term Security Practices

Regularly update firmware and software to ensure systems are protected against the latest threats.
Conduct security audits and penetration testing to identify and address any potential weaknesses in the network.

Patching and Updates

Stay informed about security advisories and updates from TOTOLink to promptly apply patches and protect systems from known vulnerabilities.