CVE-2019-1588 : Security Advisory and Response

A vulnerability in Cisco Nexus 9000 Series Fabric Switches in Application-Centric Infrastructure (ACI) mode allows an authenticated attacker to read arbitrary files on the device.

Understanding CVE-2019-1588

This CVE involves a weakness in Cisco Nexus 9000 Series Fabric Switches operating in ACI mode that enables unauthorized file access.

What is CVE-2019-1588?

The vulnerability allows a local attacker to gain unauthorized access and read arbitrary files due to insufficient validation checks on user-supplied input.

The Impact of CVE-2019-1588

CVSS Base Score: 4.4 (Medium Severity)
Confidentiality Impact: High
Privileges Required: High
Attack Vector: Local
Availability Impact: None
No known public exploits or malicious use reported.

Technical Details of CVE-2019-1588

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw arises from inadequate validation of user-supplied input, allowing an attacker to read arbitrary files on the affected device.

Affected Systems and Versions

Affected Product: Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode
Affected Version: Less than 14.0(1h)

Exploitation Mechanism

The attacker needs to be authenticated and local to exploit this vulnerability.

Mitigation and Prevention

Protect your systems from CVE-2019-1588 with these steps:

Immediate Steps to Take

Upgrade to version 14.0(1h) to mitigate the vulnerability.
Monitor for any unauthorized access or file reads.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access.
Regularly review and update security policies and configurations.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by Cisco.