CVE-2021-1583 : Security Advisory and Response

A detailed overview of a vulnerability in the fabric infrastructure file system access control of Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode that could allow an attacker to read arbitrary files on an affected system.

Understanding CVE-2021-1583

This section provides insights into the nature of the CVE including its impact, technical details, and mitigation strategies.

What is CVE-2021-1583?

CVE-2021-1583 is a vulnerability in the fabric infrastructure file system access control of Cisco Nexus 9000 Series Fabric Switches in ACI mode. It enables an authenticated, local attacker to read arbitrary files on an affected system due to improper access control.

The Impact of CVE-2021-1583

The vulnerability allows an attacker with Administrator privileges to execute a specific command, leading to the unauthorized reading of files on the affected device. This could compromise the confidentiality of sensitive information stored on the device.

Technical Details of CVE-2021-1583

This section delves into the specifics of the vulnerability, affected systems, exploitation mechanism, and more.

Vulnerability Description

The vulnerability arises from inadequate fabric infrastructure file system access control, facilitating unauthorized file reading on the affected Cisco Nexus 9000 Series Fabric Switches in ACI mode.

Affected Systems and Versions

The issue affects Cisco NX-OS System Software in ACI Mode with version 'n/a'.

Exploitation Mechanism

An authenticated, local attacker with Administrator privileges can exploit the vulnerability by executing a specific command on the affected device, enabling access to arbitrary files on the file system.

Mitigation and Prevention

This section outlines the immediate steps organizations can take to address the CVE, as well as long-term security practices and the importance of patching and updates.

Immediate Steps to Take

Organizations are advised to monitor Cisco's security advisories and apply patches or workarounds recommended by the vendor to mitigate the vulnerability.

Long-Term Security Practices

Implementing the principle of least privilege, regularly conducting security assessments, and staying informed about security updates are essential for maintaining a secure network environment.

Patching and Updates

Ensure that your systems are up-to-date with the latest patches provided by Cisco to address the vulnerability.