CVE-2020-3409 : Exploit Details and Defense Strategies

A vulnerability in the PROFINET feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the device.

Understanding CVE-2020-3409

This CVE involves a vulnerability in Cisco IOS and IOS XE Software that could lead to a DoS attack.

What is CVE-2020-3409?

The vulnerability in the PROFINET feature allows attackers to crash and reload affected devices by sending crafted packets.

The Impact of CVE-2020-3409

Attackers can exploit the vulnerability to cause a DoS condition on the device.

Technical Details of CVE-2020-3409

This section provides more technical insights into the CVE.

Vulnerability Description

Insufficient processing logic for crafted PROFINET packets leads to the vulnerability.

Affected Systems and Versions

Product: Cisco IOS
Vendor: Cisco
Versions affected: Not applicable

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Adjacent Network
Availability Impact: High
Base Score: 7.4 (High)
Vector String: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Apply vendor patches and updates promptly.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Implement network segmentation to limit the attack surface.
Regularly update and patch all software and firmware.

Patching and Updates

Refer to the vendor advisory for specific patch details and instructions.