CVE-2021-1423 : Security Advisory and Response

A vulnerability has been identified in Cisco Aironet Access Points (AP) that could allow a local attacker to overwrite files in the device's flash memory. This could be exploited by an authenticated attacker leveraging insufficient input validation.

Understanding CVE-2021-1423

This vulnerability in Cisco Aironet Access Points involves the potential for local attackers to manipulate flash memory files.

What is CVE-2021-1423?

The vulnerability in a CLI command implementation could allow an authenticated local attacker to overwrite files in the flash memory due to insufficient input validation.

The Impact of CVE-2021-1423

A successful exploit could enable the attacker to overwrite or create files with existing data on the affected device.

Technical Details of CVE-2021-1423

This section provides more insight into the vulnerability.

Vulnerability Description

Insufficient input validation for a specific CLI command allows an attacker to overwrite files in the device's flash memory.

Affected Systems and Versions

Product: Cisco Aironet Access Point Software
Vendor: Cisco
Versions affected: Not applicable

Exploitation Mechanism

An attacker could exploit this vulnerability by issuing a command with crafted arguments to overwrite or create files on the affected device.

Mitigation and Prevention

Understanding the steps to mitigate and prevent the exploitation of CVE-2021-1423.

Immediate Steps to Take

Cisco encourages users to apply the necessary security updates and follow best practices to secure their devices.

Long-Term Security Practices

Regular security training, network monitoring, and access control mechanisms can help prevent unauthorized access and limit the impact of security vulnerabilities.

Patching and Updates

Refer to the Cisco Security Advisory for patch details and ensure timely application of updates to protect against CVE-2021-1423.