CVE-2018-21187 : Vulnerability Insights and Analysis

Some NETGEAR devices have been found to have a stack-based buffer overflow vulnerability when used by an authenticated user. This vulnerability affects various NETGEAR router models.

Understanding CVE-2018-21187

This CVE identifies a stack-based buffer overflow vulnerability in certain NETGEAR devices, allowing an authenticated user to exploit the issue.

What is CVE-2018-21187?

CVE-2018-21187 is a vulnerability found in NETGEAR routers that could be exploited by an authenticated user to trigger a stack-based buffer overflow.

The Impact of CVE-2018-21187

The vulnerability has a CVSS base score of 6.8, indicating a medium severity issue with high impacts on confidentiality, integrity, and availability of the affected devices.

Technical Details of CVE-2018-21187

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows an authenticated user to execute a stack-based buffer overflow on certain NETGEAR router models.

Affected Systems and Versions

The following NETGEAR devices are affected by this vulnerability:

D7800 (version before 1.0.1.30)
R7500 (version before 1.0.0.122)
R7500v2 (version before 1.0.3.24)
R7800 (version before 1.0.2.40)
R9000 (version before 1.0.2.52)
WNDR3700v4 (version before 1.0.2.92)
WNDR4300 (version before 1.0.2.94)
WNDR4300v2 (version before 1.0.0.50)
WNDR4500v3 (version before 1.0.0.50)
WNR2000v5 (version before 1.0.0.62)

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user to trigger a stack-based buffer overflow, potentially leading to unauthorized access or denial of service.

Mitigation and Prevention

Protecting your systems from CVE-2018-21187 is crucial to maintaining security.

Immediate Steps to Take

Update affected devices to the latest firmware versions provided by NETGEAR.
Implement strong authentication mechanisms to prevent unauthorized access.

Long-Term Security Practices

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

Patching and Updates

Apply patches and updates promptly to address known vulnerabilities and enhance device security.