CVE-2021-35085 : What You Need to Know

A vulnerability has been identified in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile, impacting various versions manufactured by Qualcomm, Inc. The vulnerability could lead to a possible buffer overflow during management frame Rx handling.

Understanding CVE-2021-35085

This section will delve into the specifics of CVE-2021-35085 and its potential implications.

What is CVE-2021-35085?

The vulnerability in CVE-2021-35085 arises from a lack of buffer length verification during management frame Rx handling in multiple Qualcomm Snapdragon products, potentially resulting in a buffer overflow scenario.

The Impact of CVE-2021-35085

If exploited, this vulnerability could allow an attacker to execute arbitrary code, crash systems, or potentially gain unauthorized access to sensitive information, posing a significant risk to the security and integrity of affected systems.

Technical Details of CVE-2021-35085

In this section, we will explore the technical aspects of CVE-2021-35085 to provide a deeper understanding of the issue.

Vulnerability Description

The vulnerability involves a buffer overflow due to the absence of buffer length validation in the handling of management frames, which could be abused by threat actors to launch malicious activities.

Affected Systems and Versions

Multiple versions of Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, and Snapdragon Mobile are susceptible to this vulnerability, as listed in the vendor's security bulletin.

Exploitation Mechanism

Exploiting this vulnerability requires local access to the affected system and the ability to craft and send specially designed management frames to trigger the buffer overflow.

Mitigation and Prevention

This section will outline measures to mitigate the risks associated with CVE-2021-35085 and safeguard vulnerable systems.

Immediate Steps to Take

Users are advised to apply the security patches provided by Qualcomm to address the vulnerability promptly. Additionally, implementing network segmentation and access controls can help reduce the attack surface.

Long-Term Security Practices

Regularly updating system software and keeping abreast of security advisories from vendors can help preemptively mitigate such vulnerabilities in the future. Conducting security assessments and audits can also enhance overall system resilience.

Patching and Updates

Staying informed about patch releases from Qualcomm and applying updates in a timely manner is crucial to ensuring the ongoing security of the affected systems.