CVE-2019-1644 : Exploit Details and Defense Strategies

Cisco IoT Field Network Director Resource Exhaustion Denial of Service Vulnerability

Understanding CVE-2019-1644

This CVE involves a vulnerability in the UDP protocol implementation used in Cisco IoT Field Network Director (IoT-FND) that could be exploited by attackers to cause a denial of service (DoS) situation.

What is CVE-2019-1644?

The vulnerability in Cisco IoT Field Network Director (IoT-FND) allows attackers to exhaust system resources by sending a high volume of UDP packets, leading to a DoS scenario.

The Impact of CVE-2019-1644

The vulnerability has a CVSS base score of 7.5 (High severity) and can result in a DoS situation by depleting system resources through a high volume of UDP packets.

Technical Details of CVE-2019-1644

The technical aspects of this CVE are as follows:

Vulnerability Description

Insufficient management of resources for incoming UDP packets in Cisco IoT Field Network Director (IoT-FND)

Affected Systems and Versions

Product: Cisco IoT Field Network Director (IoT-FND)
Vendor: Cisco
Version: Not applicable

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Availability Impact: High
Privileges Required: None
Scope: Unchanged
Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Mitigation and Prevention

Steps to address and prevent the CVE:

Immediate Steps to Take

Apply vendor-provided patches or updates
Implement network-level protections to filter out malicious UDP traffic

Long-Term Security Practices

Regularly monitor and audit network traffic for anomalies
Keep systems up to date with the latest security patches

Patching and Updates

Refer to the Cisco advisory for specific patch information and guidance