CVE-2019-5043 : Security Advisory and Response

The Nest Cam IQ Indoor version 4620002 by Nest Labs is vulnerable to a denial-of-service attack due to a flaw in its Weave daemon.

Understanding CVE-2019-5043

This CVE involves a vulnerability in the Nest Cam IQ Indoor version 4620002 that can be exploited to launch a denial-of-service attack.

What is CVE-2019-5043?

The vulnerability in the Weave daemon of Nest Cam IQ Indoor version 4620002 allows attackers to disrupt services by exploiting TCP connections to allocate resources without restrictions.

The Impact of CVE-2019-5043

CVSS Base Score: 5.3 (Medium Severity)
Attack Vector: Network
Attack Complexity: Low
Availability Impact: Low
CWE ID: CWE-400 (Uncontrolled Resource Consumption)

Technical Details of CVE-2019-5043

The technical aspects of the vulnerability in Nest Cam IQ Indoor version 4620002.

Vulnerability Description

The Weave daemon vulnerability enables attackers to trigger a denial-of-service attack by establishing multiple TCP connections, leading to resource exhaustion.

Affected Systems and Versions

Product: Nest Labs
Version: Nest Cam IQ Indoor version 4620002

Exploitation Mechanism

Attackers can exploit the vulnerability by connecting to the device multiple times, causing resource allocation without restrictions.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-5043.

Immediate Steps to Take

Update the firmware of Nest Cam IQ Indoor to the latest version.
Monitor network traffic for any suspicious activity targeting the affected version.

Long-Term Security Practices

Implement network segmentation to isolate IoT devices from critical systems.
Regularly audit and update IoT device firmware to patch known vulnerabilities.

Patching and Updates

Stay informed about security advisories from Nest Labs and apply patches promptly to address vulnerabilities.