CVE-2023-26978 : Security Advisory and Response

This CVE record pertains to a vulnerability found in the TOTOlink A7100RU V7.4cu.2313_B20191024 device, which could be exploited through a command injection vulnerability via the pppoeAcName parameter at /setting/setWanIeCfg.

Understanding CVE-2023-26978

This section will delve into what CVE-2023-26978 is, its impact, technical details, and mitigation strategies.

What is CVE-2023-26978?

CVE-2023-26978 is a vulnerability identified in the TOTOlink A7100RU V7.4cu.2313_B20191024 device, allowing malicious actors to execute arbitrary commands using the pppoeAcName parameter at /setting/setWanIeCfg.

The Impact of CVE-2023-26978

The vulnerability could potentially lead to unauthorized remote code execution, giving threat actors control over the affected device and compromising the security and privacy of the network it is connected to.

Technical Details of CVE-2023-26978

In this section, we will review the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises due to inadequate input validation of the pppoeAcName parameter, enabling attackers to inject and execute arbitrary commands on the device.

Affected Systems and Versions

The TOTOlink A7100RU V7.4cu.2313_B20191024 device is impacted by this vulnerability. Any device running this specific version is susceptible to exploitation.

Exploitation Mechanism

By sending a specially crafted input through the pppoeAcName parameter at /setting/setWanIeCfg, threat actors can manipulate the device to execute arbitrary commands, compromising its integrity.

Mitigation and Prevention

This section outlines the immediate steps to take, long-term security practices, and the significance of patching and updates.

Immediate Steps to Take

Users are advised to restrict access to the affected device, implement strong firewall rules, and monitor network activity for any suspicious behavior. It's crucial to apply security patches and updates provided by the vendor promptly.

Long-Term Security Practices

To enhance overall network security, organizations should conduct regular security audits, enforce the principle of least privilege, provide security awareness training to employees, and follow secure coding practices.

Patching and Updates

Vendors should release patches addressing the vulnerability promptly, and users must diligently apply these patches to ensure the device's security posture is fortified against potential attacks. Regularly updating firmware and software is essential to mitigate risks associated with known vulnerabilities.