CVE-2018-0307 : Vulnerability Insights and Analysis

A vulnerability in the CLI of Cisco NX-OS Software allows a local attacker to execute arbitrary commands with root privileges. This CVE impacts various Cisco products and stems from inadequate validation of command arguments.

Understanding CVE-2018-0307

This CVE, published on June 20, 2018, highlights a critical vulnerability in Cisco NX-OS Software that can be exploited by authenticated local attackers.

What is CVE-2018-0307?

The vulnerability in the CLI of Cisco NX-OS Software enables a local attacker with authentication to perform a command-injection attack on the affected device. By injecting malicious command arguments into a vulnerable CLI command, the attacker can execute arbitrary commands with root privileges.

The Impact of CVE-2018-0307

Allows an authenticated attacker to execute arbitrary commands with root privileges
Vulnerability arises from inadequate validation of command arguments
Attackers can access files from any VDC on products supporting multiple virtual device contexts

Technical Details of CVE-2018-0307

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability in the CLI of Cisco NX-OS Software results from insufficient input validation of command arguments, allowing attackers to inject malicious commands.

Affected Systems and Versions

Cisco NX-OS unknown

Exploitation Mechanism

Attacker injects malicious command arguments into a vulnerable CLI command
Successful exploitation grants the attacker root privileges

Mitigation and Prevention

Protecting systems from CVE-2018-0307 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches promptly
Monitor network traffic for signs of malicious activity
Restrict access to vulnerable systems

Long-Term Security Practices

Regularly update and patch software and firmware
Implement the principle of least privilege
Conduct security training and awareness programs for users

Patching and Updates

Cisco has released patches to address this vulnerability
Regularly check for updates and apply them to ensure system security