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CVE-2021-1903 : Security Advisory and Response

Learn about CVE-2021-1903 impacting Qualcomm Snapdragon products, causing a denial of service due to insufficient length check. Mitigate with patches and updates.

This CVE involves a possible denial of service scenario due to a lack of length check on the Channel Switch Announcement IE in various Qualcomm Snapdragon products.

Understanding CVE-2021-1903

This section delves into the details of the CVE-2021-1903 vulnerability affecting Qualcomm products.

What is CVE-2021-1903?

The CVE-2021-1903 vulnerability in Qualcomm Snapdragon products can lead to a denial of service situation due to insufficient length verification on certain frames.

The Impact of CVE-2021-1903

The impact of this vulnerability is rated as medium, with a CVSS base score of 5.3. It can result in a possible denial of service on affected systems.

Technical Details of CVE-2021-1903

In this section, we will explore the technical aspects of the CVE-2021-1903 vulnerability.

Vulnerability Description

The vulnerability arises from the lack of proper length checks on specific frames, potentially leading to a denial of service.

Affected Systems and Versions

Qualcomm products such as Snapdragon Auto, Snapdragon Compute, and Snapdragon Mobile are affected, spanning a wide range of versions.

Exploitation Mechanism

Exploiting this vulnerability involves manipulating Channel Switch Announcement IE in beacon or probe response frames, impacting various Snapdragon product lines.

Mitigation and Prevention

This section provides insights into how to mitigate and prevent the CVE-2021-1903 vulnerability.

Immediate Steps to Take

It is recommended to apply patches and updates provided by Qualcomm to address this vulnerability promptly.

Long-Term Security Practices

Implementing proper authorization mechanisms and conducting regular security assessments can help enhance overall system security.

Patching and Updates

Stay informed about security bulletins from Qualcomm and ensure timely application of relevant patches to safeguard against potential exploits.

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