CVE-2019-1618 : Security Advisory and Response

A vulnerability in the Tetration Analytics agent for Cisco Nexus 9000 Series Switches in standalone NX-OS mode allows an authenticated attacker to execute arbitrary code with root privileges.

Understanding CVE-2019-1618

This CVE involves an arbitrary code execution vulnerability in Cisco Nexus 9000 Series Switches.

What is CVE-2019-1618?

The vulnerability allows a local attacker with access to the Tetration Analytics agent to run malicious code with root privileges due to incorrect permissions settings.

The Impact of CVE-2019-1618

CVSS Base Score: 7.8 (High Severity)
Attack Vector: Local
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: Low
Scope: Unchanged
User Interaction: None
This vulnerability could lead to unauthorized code execution on affected devices.

Technical Details of CVE-2019-1618

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw arises from incorrect permissions settings in the Tetration Analytics agent, enabling attackers to replace legitimate files with malicious code.

Affected Systems and Versions

Product: Nexus 9000 Series Switches in Standalone NX-OS Mode
Vendor: Cisco
Versions Affected: Earlier than 7.0(3)I7(5)

Exploitation Mechanism

Attackers can exploit this vulnerability by replacing valid agent files with malicious code, allowing them to execute arbitrary commands.

Mitigation and Prevention

To address CVE-2019-1618, follow these mitigation strategies:

Immediate Steps to Take

Implement the recommended patches from Cisco.
Monitor network traffic for any signs of exploitation.
Restrict access to the Tetration Analytics agent.

Long-Term Security Practices

Regularly update and patch all network devices.
Conduct security training for employees to recognize and report suspicious activities.

Patching and Updates

Apply the latest security updates and patches provided by Cisco to fix the vulnerability.