CVE-2021-35074 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2021-35074, a possible integer overflow vulnerability found in Qualcomm products affecting Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile.

Understanding CVE-2021-35074

This section delves into the specifics of the CVE-2021-35074 vulnerability, detailing its impact, technical details, and mitigation strategies.

What is CVE-2021-35074?

The CVE-2021-35074 vulnerability involves a possible integer overflow due to an improper fragment datatype while calculating the number of fragments in a request message in Qualcomm's Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile products.

The Impact of CVE-2021-35074

The vulnerability has a base score of 8.4, indicating a high severity level. It can lead to high impacts on confidentiality, integrity, and availability, with a low attack complexity but a high attack vector.

Technical Details of CVE-2021-35074

This section covers specific technical aspects of the CVE-2021-35074 vulnerability, including its description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from an improper fragment datatype during fragment calculations in request messages, potentially leading to an integer overflow scenario.

Affected Systems and Versions

Qualcomm products affected include Snapdragon Auto, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile, encompassing numerous versions like AR8035, QCA6174A, QCM6490, SDX65, and more.

Exploitation Mechanism

The vulnerability can be exploited locally with no special privileges required, impacting the unchanged scope of the affected systems.

Mitigation and Prevention

In response to CVE-2021-35074, immediate steps, long-term security practices, and the importance of patching and updates are crucial for mitigating the risk and enhancing system security.

Immediate Steps to Take

Users are advised to stay informed about security bulletins and updates from Qualcomm, apply relevant patches promptly, and monitor for any unusual system behavior.

Long-Term Security Practices

Implementing robust security protocols, regular security assessments, and employee training on cybersecurity best practices can help prevent similar vulnerabilities.

Patching and Updates

Regularly applying security patches provided by Qualcomm, staying updated with security advisories, and conducting system audits can help protect against potential exploits.