CVE-2021-30319 : Exploit Details and Defense Strategies

This article provides details about CVE-2021-30319, a vulnerability found in Qualcomm products that could lead to a possible integer overflow due to improper validation of command length parameters.

Understanding CVE-2021-30319

CVE-2021-30319 is a vulnerability identified in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, and other Qualcomm products. It poses a risk of integer overflow due to inadequate validation of command length parameters while processing WMI commands.

What is CVE-2021-30319?

The CVE-2021-30319 vulnerability is centered around Snapdragon Auto, Compute, Connectivity, Consumer Electronics Connectivity, and various other Qualcomm product lines. It arises from a potential integer overflow caused by incorrect validation of command length parameters during WMI command processing.

The Impact of CVE-2021-30319

The impact of CVE-2021-30319 is significant, with a CVSS v3.1 base score of 7.8. This high severity vulnerability can result in confidentiality, integrity, and availability impacts. The attack vector is local, requiring low privileges for exploitation, and no user interaction.

Technical Details of CVE-2021-30319

The vulnerability description involves a possible integer overflow due to improper validation of command length parameters while processing WMI commands in various Qualcomm products. The affected products and versions include Snapdragon Auto, Compute, Connectivity, and more.

Vulnerability Description

The vulnerability arises from an integer overflow issue caused by the lack of proper validation of command length parameters during the processing of WMI commands in Qualcomm products.

Affected Systems and Versions

Qualcomm products affected by CVE-2021-30319 include Snapdragon Auto, Compute, Connectivity, Consumer Electronics Connectivity, and several others. A wide range of versions across these product lines are susceptible to this vulnerability.

Exploitation Mechanism

Exploiting CVE-2021-30319 requires local access to the targeted system with low privileges. Attackers can leverage the inadequate validation of command length parameters to trigger an integer overflow, potentially leading to severe consequences.

Mitigation and Prevention

To address CVE-2021-30319, immediate steps should be taken to mitigate the risk and prevent possible exploitation. Long-term security practices and timely patching and updates are crucial to safeguard vulnerable systems.

Immediate Steps to Take

It is essential to apply relevant security patches provided by Qualcomm to address the CVE-2021-30319 vulnerability. Additionally, organizations should monitor for any signs of exploitation and restrict access to potentially impacted systems.

Long-Term Security Practices

Implementing robust security measures, conducting regular vulnerability assessments, and ensuring proper validation of parameters in command processing can enhance long-term security resilience against similar vulnerabilities.

Patching and Updates

Regularly updating Qualcomm products to the latest firmware versions that include patches for CVE-2021-30319 is vital. Promptly applying security updates and staying informed about potential vulnerabilities is crucial for maintaining a secure environment.