CVE-2021-30321 Explained : Impact and Mitigation

This CVE-2021-30321 involves a possible buffer overflow vulnerability in Qualcomm's Snapdragon Compute, Connectivity, and Consumer Electronics Connectivity products. The issue arises due to a lack of parameter length check during MBSSID scan IE parse.

Understanding CVE-2021-30321

This section provides an overview of the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-30321?

The CVE-2021-30321 vulnerability is a possible buffer overflow caused by a missing parameter length check during MBSSID scan IE parse within Qualcomm's Snapdragon Compute, Connectivity, and Consumer Electronics Connectivity products.

The Impact of CVE-2021-30321

The vulnerability has been assigned a CVSS base score of 9.8, indicating a critical severity level with high impacts on confidentiality, integrity, and availability. The attack complexity is low, and it can be exploited remotely without user interaction.

Technical Details of CVE-2021-30321

This section delves into specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises due to a lack of parameter length check during MBSSID scan IE parse, leading to a possible buffer overflow.

Affected Systems and Versions

Qualcomm's Snapdragon Compute, Connectivity, and Consumer Electronics Connectivity products are affected by this vulnerability across various versions including AQT1000, QCA1062, QCA1064, and more.

Exploitation Mechanism

The vulnerability can be exploited remotely without the need for privileges, making it a significant risk to affected systems.

Mitigation and Prevention

This section outlines essential steps to mitigate and prevent exploitation of CVE-2021-30321.

Immediate Steps to Take

Organizations should apply security patches and updates provided by Qualcomm to address the vulnerability immediately.

Long-Term Security Practices

Implementing robust security measures and regular security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly monitor for security advisories from Qualcomm and apply patches promptly to secure systems.