CVE-2018-21145 : What You Need to Know

NETGEAR devices are affected by a stack-based buffer overflow vulnerability, allowing authenticated users to exploit the system. This CVE impacts various models including D7800, DM200, R6100, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.

Understanding CVE-2018-21145

This CVE involves a stack-based buffer overflow vulnerability in NETGEAR devices, potentially leading to unauthorized access and system compromise.

What is CVE-2018-21145?

The CVE-2018-21145 vulnerability affects several NETGEAR devices, enabling authenticated users to exploit a stack-based buffer overflow.

The Impact of CVE-2018-21145

CVSS Base Score: 6.8 (Medium Severity)
Attack Vector: Adjacent Network
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Privileges Required: High
Scope: Unchanged
User Interaction: None

Technical Details of CVE-2018-21145

This section provides detailed technical information about the CVE-2018-21145 vulnerability.

Vulnerability Description

The vulnerability involves a stack-based buffer overflow in certain NETGEAR devices, allowing authenticated users to execute arbitrary code.

Affected Systems and Versions

The following NETGEAR device versions are affected:

D7800 versions earlier than 1.0.1.34
DM200 versions earlier than 1.0.0.50
R6100 versions earlier than 1.0.1.22
R7500 versions earlier than 1.0.0.122
R7800 versions earlier than 1.0.2.42
R8900 versions earlier than 1.0.3.10
R9000 versions earlier than 1.0.3.10
WNDR3700v4 versions earlier than 1.0.2.96
WNDR4300 versions earlier than 1.0.2.98
WNDR4300v2 versions earlier than 1.0.0.54
WNDR4500v3 versions earlier than 1.0.0.54
WNR2000v5 versions earlier than 1.0.0.64

Exploitation Mechanism

The vulnerability can be exploited by authenticated users to trigger a stack-based buffer overflow, potentially leading to unauthorized access and system compromise.

Mitigation and Prevention

To address CVE-2018-21145, follow these mitigation steps:

Immediate Steps to Take

Update affected devices to the latest firmware versions provided by NETGEAR.
Restrict network access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update firmware and security patches for all network devices.
Implement strong authentication mechanisms and access controls.

Patching and Updates

NETGEAR has released patches for the affected devices. Ensure timely installation of these patches to mitigate the vulnerability.