CVE-2017-18738 : Security Advisory and Response

An unauthorized attacker can exploit a stack-based buffer overflow vulnerability in certain models of NETGEAR devices.

Understanding CVE-2017-18738

What is CVE-2017-18738?

Certain models of NETGEAR devices are vulnerable to a stack-based buffer overflow, allowing unauthorized attackers to exploit the vulnerability.

The Impact of CVE-2017-18738

The vulnerability has a CVSS base score of 8.8, indicating a high severity level with significant impacts on confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2017-18738

Vulnerability Description

An unauthorized attacker can exploit a stack-based buffer overflow vulnerability in specific NETGEAR device models.

Affected Systems and Versions

The following NETGEAR models are affected by this vulnerability: EX6150v2, R6400, R6400v2, R6700, R6900, R7000, R7000P, R6900P, R7100LG, R7300DST, R7900, R8000, R8300, R8500, R6100, WNDR4300v2, WNDR4500v3, and WNR2000v5.

Exploitation Mechanism

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

Mitigation and Prevention

Immediate Steps to Take

Update the firmware of the affected NETGEAR devices to the latest versions provided by the vendor.
Implement network segmentation to minimize the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all network devices and systems.
Conduct security assessments and penetration testing to identify and address vulnerabilities.
Educate users and administrators about best security practices.

Patching and Updates

Regularly check for security advisories and updates from NETGEAR to apply patches promptly.