CVE-2022-40279 : Exploit Details and Defense Strategies

An issue was discovered in Samsung TizenRT through 3.0_GBM (and 3.1_PRE). The vulnerability in wpa_supplicant's l2_packet_receive_timeout function in l2_packet_pcap.c could result in a denial of service (malfunction).

Understanding CVE-2022-40279

This section will cover what CVE-2022-40279 is, its impact, technical details, and mitigation steps.

What is CVE-2022-40279?

CVE-2022-40279 is a vulnerability identified in Samsung TizenRT versions 3.0_GBM and 3.1_PRE, affecting the l2_packet_receive_timeout function in wpa_supplicant. The issue arises from a missing check on the return value of pcap_dispatch, enabling a denial of service attack.

The Impact of CVE-2022-40279

The impact of this vulnerability is the potential disruption and malfunction of systems running the affected TizenRT versions, leading to a denial of service condition. Attackers can leverage this weakness to cause operational disturbances.

Technical Details of CVE-2022-40279

Let's delve into the specific technical aspects of CVE-2022-40279.

Vulnerability Description

The vulnerability stems from the absence of a crucial check on the return value of pcap_dispatch in the l2_packet_receive_timeout function within wpa_supplicant's source code.

Affected Systems and Versions

Samsung TizenRT versions 3.0_GBM and 3.1_PRE are specifically impacted by this vulnerability.

Exploitation Mechanism

Malicious actors can exploit this weakness by triggering the vulnerable code path, causing a malfunction that results in a denial of service.

Mitigation and Prevention

Discover the essential steps to mitigate the risks associated with CVE-2022-40279.

Immediate Steps to Take

System administrators are advised to apply vendor-issued patches promptly to address the vulnerability. It is crucial to update affected TizenRT installations to a secure version.

Long-Term Security Practices

Implementing secure coding practices, regularly updating software components, and monitoring network traffic for anomalies can enhance overall security posture.

Patching and Updates

Staying informed about security updates and following best practices in patch management are vital for safeguarding systems against known vulnerabilities.