CVE-2018-21184 : Exploit Details and Defense Strategies

An authenticated user can cause a stack-based buffer overflow in specific NETGEAR devices. This vulnerability impacts D6100 devices prior to version 1.0.0.57, D7800 devices prior to version 1.0.1.28, R7500v2 devices prior to version 1.0.3.24, R7800 devices prior to version 1.0.2.40, and R9000 devices prior to version 1.0.3.6.

Understanding CVE-2018-21184

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.

What is CVE-2018-21184?

An authenticated user can exploit a stack-based buffer overflow vulnerability in specific NETGEAR devices.

The Impact of CVE-2018-21184

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

Technical Details of CVE-2018-21184

Vulnerability Description

The vulnerability allows an authenticated user to trigger a stack-based buffer overflow in certain NETGEAR devices.

Affected Systems and Versions

The following devices are impacted:

D6100 devices before version 1.0.0.57
D7800 devices before version 1.0.1.28
R7500v2 devices before version 1.0.3.24
R7800 devices before version 1.0.2.40
R9000 devices before version 1.0.3.6

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user to execute arbitrary code on the affected devices.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by NETGEAR for the affected devices.
Monitor vendor's security advisories for updates.

Long-Term Security Practices

Regularly update firmware and software on networking devices.
Implement strong authentication mechanisms to prevent unauthorized access.
Conduct regular security assessments and penetration testing.

Patching and Updates

Ensure all NETGEAR devices are running the latest firmware to mitigate the vulnerability.