CVE-2017-18756 Explained : Impact and Mitigation

A number of NETGEAR devices have been found to have incorrect security configuration settings affecting various models.

Understanding CVE-2017-18756

This CVE identifies a security misconfiguration issue in certain NETGEAR devices, impacting the security settings of multiple router models.

What is CVE-2017-18756?

The CVE-2017-18756 vulnerability involves incorrect security configuration settings in several NETGEAR router models, potentially exposing them to security risks.

The Impact of CVE-2017-18756

The vulnerability has a high severity rating with significant impacts on confidentiality, integrity, and availability of the affected devices.

Technical Details of CVE-2017-18756

This section provides detailed technical insights into the CVE-2017-18756 vulnerability.

Vulnerability Description

The vulnerability arises from incorrect security configuration settings in specific NETGEAR router models, leaving them susceptible to exploitation.

Affected Systems and Versions

The following NETGEAR router models are affected by this vulnerability:

D6220 (version prior to 1.0.0.32)
D6400 (version prior to 1.0.0.66)
D8500 (version prior to 1.0.3.35)
DGN2200Bv4 (version prior to 1.0.0.94)
DGN2200v4 (version prior to 1.0.0.94)
R6250 (version prior to 1.0.4.14)
R6300v2 (version prior to 1.0.4.18)
R6400 (version prior to 1.01.32)
R6400v2 (version prior to 1.0.2.44)
R6700 (version prior to 1.0.1.36)
R6900 (version prior to 1.0.1.30)
R6900P (version prior to 1.3.0.8)
R7000 (version prior to 1.0.9.14)
R7000P (version prior to 1.3.0.8)
R7100LG (version prior to 1.0.0.34)
R7900 (version prior to 1.0.2.4)
R8000 (version prior to 1.0.4.2)
WN2500RPv2 (version prior to 1.0.1.50)
WNDR3400v3 (version prior to 1.0.1.14)
WNDR4000 (version prior to 1.0.2.10)

Exploitation Mechanism

The vulnerability can be exploited through adjacent network access, with no user interaction or privileges required.

Mitigation and Prevention

Protecting systems from CVE-2017-18756 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update affected NETGEAR devices to the recommended firmware versions.
Implement strong network security measures to mitigate potential risks.

Long-Term Security Practices

Regularly monitor and update router firmware to address security vulnerabilities.
Conduct security audits to identify and rectify misconfigurations that could lead to security breaches.

Patching and Updates

Ensure timely installation of security patches and updates provided by NETGEAR to address the CVE-2017-18756 vulnerability.