CVE-2018-0302 : Vulnerability Insights and Analysis

An authenticated, local attacker can exploit a vulnerability in the CLI parser of Cisco FXOS Software and Cisco UCS Fabric Interconnect Software to trigger a buffer overflow, potentially leading to arbitrary code execution with root privileges.

Understanding CVE-2018-0302

This CVE involves a buffer overflow vulnerability in Cisco FXOS Software and UCS Fabric Interconnect Software, impacting various Cisco products.

What is CVE-2018-0302?

The vulnerability allows an attacker to execute arbitrary code with root privileges by exploiting the CLI parser subsystem's lack of proper input validation.
By exceeding the expected length of user input, the attacker can trigger a buffer overflow on the affected device.

The Impact of CVE-2018-0302

Successful exploitation could result in the execution of arbitrary code with elevated privileges on the compromised system.
Affected devices include Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, and various UCS Fabric Interconnects.

Technical Details of CVE-2018-0302

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability lies in the CLI parser subsystem's inadequate input validation, allowing for a buffer overflow.

Affected Systems and Versions

Products impacted include Cisco FXOS Software and UCS Fabric Interconnect Software, affecting various Cisco devices.

Exploitation Mechanism

Attackers can exploit the vulnerability by submitting user input that exceeds the expected length, leading to buffer overflow and potential code execution.

Mitigation and Prevention

Protecting systems from CVE-2018-0302 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches and updates provided by Cisco to address the vulnerability.
Monitor Cisco's security advisories for any new information or mitigation strategies.

Long-Term Security Practices

Implement strong authentication mechanisms to prevent unauthorized access.
Regularly review and update security configurations to enhance system resilience.

Patching and Updates

Regularly check for security updates and patches from Cisco to mitigate the vulnerability effectively.