CVE-2017-18826 Explained : Impact and Mitigation

NETGEAR devices, including M4300 series switches, are vulnerable to vertical privilege escalation before version 12.0.2.15.

Understanding CVE-2017-18826

This CVE identifies a security flaw in certain NETGEAR devices that allows attackers to escalate privileges vertically.

What is CVE-2017-18826?

The vulnerability in NETGEAR devices, specifically the M4300 series switches, enables unauthorized users to gain elevated privileges on the affected devices.

The Impact of CVE-2017-18826

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

Technical Details of CVE-2017-18826

NETGEAR M4300 series switches are susceptible to vertical privilege escalation due to a security flaw present in versions prior to 12.0.2.15.

Vulnerability Description

The vulnerability allows attackers to escalate their privileges on the affected devices, potentially leading to unauthorized access and control.

Affected Systems and Versions

M4300-28G
M4300-52G
M4300-28G-POE+
M4300-52G-POE+
M4300-8X8F
M4300-12X12F
M4300-24X24F
M4300-24X
M4300-48X
M4200

Exploitation Mechanism

Attackers with low privileges can exploit this vulnerability locally, without requiring user interaction, to gain elevated access.

Mitigation and Prevention

Steps to address and prevent the CVE-2017-18826 vulnerability:

Immediate Steps to Take

Update affected devices to version 12.0.2.15 or later to patch the vulnerability.
Monitor network activity for any signs of unauthorized access.

Long-Term Security Practices

Regularly update firmware and security patches on NETGEAR devices.
Implement strong access controls and user privilege management.

Patching and Updates

Stay informed about security advisories from NETGEAR and apply patches promptly to mitigate potential risks.