CVE-2019-12101 Explained : Impact and Mitigation

LibNyoci 0.07.00rc1's coap_decode_option function mishandles certain packets, allowing remote attackers to trigger a denial of service by causing a segmentation fault.

Understanding CVE-2019-12101

This CVE involves a vulnerability in LibNyoci 0.07.00rc1 that can be exploited by attackers to disrupt services.

What is CVE-2019-12101?

The vulnerability arises from the mishandling of specific packets containing "Uri-Path: (null)" by the coap_decode_option function in coap.c within LibNyoci 0.07.00rc1.

The Impact of CVE-2019-12101

Exploitation of this vulnerability can lead to a denial of service condition due to a segmentation fault triggered by remote attackers.

Technical Details of CVE-2019-12101

This section delves into the technical aspects of the CVE.

Vulnerability Description

The coap_decode_option function in coap.c within LibNyoci 0.07.00rc1 fails to handle packets with "Uri-Path: (null)" correctly, enabling attackers to exploit this flaw.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: LibNyoci 0.07.00rc1

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by sending packets with specific content to trigger a segmentation fault.

Mitigation and Prevention

To address CVE-2019-12101, follow these mitigation strategies:

Immediate Steps to Take

Apply vendor patches or updates promptly.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly monitor and update software components to address vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.

Patching and Updates

Stay informed about security advisories related to LibNyoci and apply patches as soon as they are available.