CVE-2017-12335 : What You Need to Know

A vulnerability in the Cisco NX-OS System Software CLI allows a local attacker to perform a command injection attack, potentially gaining unauthorized access to the underlying operating system.

Understanding CVE-2017-12335

What is CVE-2017-12335?

The vulnerability in Cisco NX-OS System Software CLI enables an authenticated local attacker to execute arbitrary commands by injecting carefully crafted command arguments.

The Impact of CVE-2017-12335

The vulnerability could lead to unauthorized access to the affected device's operating system, allowing the attacker to execute commands at the user's privilege level.

Technical Details of CVE-2017-12335

Vulnerability Description

Insufficient validation of command arguments in Cisco NX-OS System Software CLI
Allows a local attacker to perform command injection attacks

Affected Systems and Versions

Cisco NX-OS System Software running on various products including Nexus switches and Unified Computing System Manager

Exploitation Mechanism

Attacker injects crafted command arguments into a vulnerable CLI command
Gains unauthorized access to the device's operating system

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by Cisco to address the vulnerability
Monitor network traffic for signs of exploitation

Long-Term Security Practices

Regularly update and patch all software and firmware
Implement strong authentication mechanisms and access controls
Conduct regular security audits and assessments

Patching and Updates

Cisco has released patches to fix the vulnerability in affected products