CVE-2021-1933 : Security Advisory and Response

This article provides detailed insights into CVE-2021-1933, a security vulnerability affecting various Qualcomm products like Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, and more.

Understanding CVE-2021-1933

CVE-2021-1933 pertains to improper validation of an invite message with an SDP body in multiple Qualcomm products, potentially leading to User Equipment (UE) assertion.

What is CVE-2021-1933?

The vulnerability in Snapdragon processors allows attackers to trigger a UE assertion due to the incorrect validation of specific message types.

The Impact of CVE-2021-1933

With a CVSS base score of 9.8, this critical vulnerability can result in high impact on confidentiality, integrity, and availability of affected systems. Attack complexity is low with no user interaction required.

Technical Details of CVE-2021-1933

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from improper validation of invite messages with an SDP body, creating an avenue for UE assertion in Qualcomm products.

Affected Systems and Versions

Qualcomm products including Snapdragon Auto, Compute, Connectivity, and more are affected. Versions impacted range from APQ8017 to WHS9410.

Exploitation Mechanism

Exploiting this vulnerability requires network access but no user interaction, making it critical to address promptly.

Mitigation and Prevention

Protective measures and best practices to safeguard systems against CVE-2021-1933.

Immediate Steps to Take

Apply security patches and updates provided by Qualcomm to address the vulnerability promptly.

Long-Term Security Practices

Implement network security controls, regularly update firmware, and monitor for any signs of exploitation to enhance overall system security.

Patching and Updates

Ensure all affected systems are patched with the latest security updates from Qualcomm to mitigate the risk of exploitation.