CVE-2018-6437 : Vulnerability Insights and Analysis

A vulnerability in the help command of Brocade Fabric OS command line interface (CLI) versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d could allow a local attacker to escape the restricted shell and gain root access.

Understanding CVE-2018-6437

In versions prior to 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d of the Brocade Fabric OS CLI, a vulnerability exists in the help command that could lead to privilege escalation.

What is CVE-2018-6437?

The vulnerability in the help command of Brocade Fabric OS CLI versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d allows a local attacker to bypass shell restrictions and obtain root access.

The Impact of CVE-2018-6437

This vulnerability could potentially enable a local attacker to escalate privileges and gain root access on affected systems.

Technical Details of CVE-2018-6437

Vulnerability Description

The vulnerability in the help command of Brocade Fabric OS CLI versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d allows a local attacker to bypass restrictions and gain root access.

Affected Systems and Versions

Product: Brocade Fabric OS
Vendor: Brocade Communications Systems, Inc.
Versions Affected: All versions prior to 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d

Exploitation Mechanism

The vulnerability could be exploited by a local attacker to escape the restricted shell and elevate privileges to root.

Mitigation and Prevention

Immediate Steps to Take

Update Brocade Fabric OS to version 8.2.1, 8.1.2f, 8.0.2f, or 7.4.2d to mitigate the vulnerability.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access.
Regularly review and update access controls and permissions.

Patching and Updates

Apply security patches and updates provided by Brocade Communications Systems, Inc. to address the vulnerability.