CVE-2021-22673 : Security Advisory and Response

A stack-based buffer overflow vulnerability has been identified in the SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, CC3100 products. This vulnerability could be exploited by attackers to remotely execute code through over-the-air firmware updates.

Understanding CVE-2021-22673

This section will cover the details related to the CVE-2021-22673 vulnerability.

What is CVE-2021-22673?

The affected products are susceptible to a stack-based buffer overflow when processing over-the-air firmware updates from the CDN server. This flaw enables remote code execution on the targeted devices.

The Impact of CVE-2021-22673

The vulnerability allows threat actors to execute arbitrary code on the affected SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, and CC3100 devices. This exploitation could result in a complete compromise of the device's security and integrity.

Technical Details of CVE-2021-22673

In this section, we will delve into the technical aspects of the CVE-2021-22673 vulnerability.

Vulnerability Description

The vulnerability arises due to a stack-based buffer overflow in the firmware update process. Attackers can leverage this flaw to inject and execute malicious code on the affected devices.

Affected Systems and Versions

Products impacted include SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, and CC3100 with specific vulnerable versions detailed in the description.

Exploitation Mechanism

Threat actors can exploit this vulnerability by sending specially crafted over-the-air firmware updates to the target devices, triggering the buffer overflow and executing malicious code.

Mitigation and Prevention

This section will outline the steps to mitigate the risks associated with CVE-2021-22673.

Immediate Steps to Take

Users and administrators must apply security patches provided by the vendor to address the stack-based buffer overflow vulnerability. Implement network defenses to prevent unauthorized access to affected devices.

Long-Term Security Practices

Regularly update firmware and software on the impacted devices to ensure that known vulnerabilities are patched promptly. Conduct security assessments and monitoring to detect any unusual activities.

Patching and Updates

Stay informed about security advisories from the vendor and promptly apply patches and updates to eliminate the risk of exploitation.