CVE-2021-45608 : Security Advisory and Response

Certain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices are affected by an integer overflow vulnerability that could potentially lead to remote code execution.

Understanding CVE-2021-45608

This CVE involves an integer overflow vulnerability in multiple devices from various manufacturers, with the potential for unauthorized remote code execution.

What is CVE-2021-45608?

CVE-2021-45608 is an integer overflow vulnerability found in certain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices. An attacker could exploit this vulnerability to potentially execute code remotely via the WAN interface.

The Impact of CVE-2021-45608

The vulnerability has a CVSS base score of 6.5, indicating a medium severity issue. While the attack vector is through the network, no privileges are required, and the confidentiality impact is high.

Technical Details of CVE-2021-45608

This section provides more technical details about the vulnerability.

Vulnerability Description

The integer overflow occurs in SoftwareBus_dispatchNormalEPMsgOut in the KCodes NetUSB kernel module, affecting various devices including NETGEAR D7800, R6400v2, and R6700v3.

Affected Systems and Versions

Affected NETGEAR devices include D7800 before 1.0.1.68, R6400v2 before 1.0.4.122, and R6700v3 before 1.0.4.122

Exploitation Mechanism

Remote code execution from the WAN interface (TCP port 20005) is a potential risk

Mitigation and Prevention

Learn how to protect your devices from this vulnerability.

Immediate Steps to Take

Update affected devices to the latest firmware versions provided by the respective manufacturers
Implement strong network security measures to prevent unauthorized access

Long-Term Security Practices

Regularly scan and monitor networks for unusual activities
Educate users on safe browsing habits and the importance of firmware updates

Patching and Updates

Ensure that all devices are running the latest firmware to patch the vulnerability