CVE-2018-21166 Explained : Impact and Mitigation

NETGEAR devices including R6100, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5 are vulnerable to denial of service attacks.

Understanding CVE-2018-21166

This CVE involves denial of service vulnerabilities in various NETGEAR router models.

What is CVE-2018-21166?

The CVE-2018-21166 vulnerability affects multiple NETGEAR router models, making them susceptible to denial of service attacks.

The Impact of CVE-2018-21166

The vulnerability can result in a denial of service condition, potentially disrupting network availability for affected devices.

Technical Details of CVE-2018-21166

This section provides technical details of the CVE-2018-21166 vulnerability.

Vulnerability Description

The vulnerability exists in versions prior to specific firmware versions for each affected NETGEAR device model.

Affected Systems and Versions

R6100: Before 1.0.1.22
R7500: Before 1.0.0.122
R7800: Before 1.0.2.42
R8900, R9000: Before 1.0.3.10
WNDR3700v4: Before 1.0.2.96
WNDR4300, WNDR4300v2: Before 1.0.2.98
WNDR4500v3: Before 1.0.0.54
WNR2000v5: Before 1.0.0.64

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Adjacent Network
Privileges Required: High
Availability Impact: High
Confidentiality Impact: None
Integrity Impact: None
User Interaction: None
Scope: Unchanged

Mitigation and Prevention

Protect your systems from CVE-2018-21166 with these mitigation strategies.

Immediate Steps to Take

Update affected devices to the latest firmware versions.
Implement network security best practices.

Long-Term Security Practices

Regularly monitor for security advisories and updates from NETGEAR.
Conduct security assessments to identify vulnerabilities proactively.

Patching and Updates

Apply patches and firmware updates promptly to address known vulnerabilities.