CVE-2018-0306 Explained : Impact and Mitigation

A vulnerability in the CLI parser of Cisco NX-OS Software allows a local attacker with authenticated access to execute arbitrary commands with root privileges on affected devices.

Understanding CVE-2018-0306

This CVE involves a command-injection vulnerability in Cisco NX-OS Software, enabling attackers to manipulate CLI commands.

What is CVE-2018-0306?

The vulnerability arises from insufficient input validation in CLI command arguments, permitting injection of malicious commands by authenticated local attackers.

The Impact of CVE-2018-0306

Exploiting this vulnerability grants attackers the ability to execute unauthorized commands with elevated privileges on affected devices.

Technical Details of CVE-2018-0306

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw in the CLI parser of Cisco NX-OS Software allows attackers to inject malicious command arguments, leading to unauthorized command execution with root privileges.

Affected Systems and Versions

Various Cisco devices, including Nexus switches and MDS Multilayer Switches, are impacted by this vulnerability.

Exploitation Mechanism

Attackers inject malicious command arguments into vulnerable CLI commands, exploiting the lack of input validation to execute unauthorized commands.

Mitigation and Prevention

Protecting systems from CVE-2018-0306 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply relevant security patches promptly
Monitor network traffic for suspicious activities
Restrict access to vulnerable devices

Long-Term Security Practices

Regularly update and patch software
Implement strong authentication mechanisms
Conduct security training for staff

Patching and Updates

Ensure all affected systems are updated with the latest patches to mitigate the vulnerability.