CVE-2018-21220 : What You Need to Know

An unauthorized attacker can exploit a buffer overflow vulnerability in certain NETGEAR devices. This vulnerability affects various models and versions.

Understanding CVE-2018-21220

Certain NETGEAR devices are vulnerable to a buffer overflow attack by an unauthenticated attacker.

What is CVE-2018-21220?

The CVE-2018-21220 vulnerability allows unauthorized attackers to exploit a buffer overflow in specific NETGEAR devices.

The Impact of CVE-2018-21220

CVSS Score: 8.8 (High)
Attack Complexity: Low
Attack Vector: Adjacent Network
Availability Impact: High
Confidentiality Impact: High
Integrity Impact: High
Privileges Required: None
User Interaction: None

Technical Details of CVE-2018-21220

Certain details about the vulnerability and affected systems.

Vulnerability Description

The vulnerability involves a buffer overflow in NETGEAR devices, allowing unauthorized access.

Affected Systems and Versions

The following models and versions are affected:

D3600 (before 1.0.0.67)
D6000 (before 1.0.0.67)
D6100 (before 1.0.0.56)
D7800 (before 1.0.1.30)
R6100 (before 1.0.1.20)
R7500 (before 1.0.0.118)
R7500v2 (before 1.0.3.24)
R9000 (before 1.0.2.52)
WNDR3700v4 (before 1.0.2.96)
WNDR4300 (before 1.0.2.98)
WNDR4300v2 (before 1.0.0.50)
WNDR4500v3 (before 1.0.0.50)
WNR2000v5 (before 1.0.0.62)

Exploitation Mechanism

The vulnerability can be exploited by an unauthorized attacker through a buffer overflow attack.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2018-21220.

Immediate Steps to Take

Update affected devices to the latest firmware versions.
Implement network segmentation to limit exposure.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all network devices.
Conduct security audits and penetration testing.

Patching and Updates

Apply patches provided by NETGEAR to address the buffer overflow vulnerability.