CVE-2021-30293 : Security Advisory and Response

This article provides detailed information about CVE-2021-30293, a vulnerability affecting multiple Qualcomm products in the Snapdragon series.

Understanding CVE-2021-30293

CVE-2021-30293 is a vulnerability that could lead to a possible assertion due to a lack of input validation in the PUSCH configuration of various Qualcomm products.

What is CVE-2021-30293?

The vulnerability affects Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, and Snapdragon Industrial IOT devices. It could be exploited by attackers to trigger a reachable assertion in the modem.

The Impact of CVE-2021-30293

With a CVSS base score of 7.5, this vulnerability has a high impact on the availability of the affected systems. The attack complexity is low, and no user interaction or privileges are required, making it relatively easy to exploit.

Technical Details of CVE-2021-30293

This section delves into specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from a lack of input validation in the PUSCH configuration, potentially leading to a reachable assertion in the modem components of the affected Qualcomm products.

Affected Systems and Versions

Qualcomm products impacted by CVE-2021-30293 include a wide range of chipsets and modules from different Snapdragon series, such as AR6003, MDM9607, QCS605, SD675, SD870, and others.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely over a network without requiring any special privileges or user interaction. The lack of proper validation in PUSCH configuration makes the system susceptible to assertion failures.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-30293, follow these security measures.

Immediate Steps to Take

Verify and apply security patches provided by Qualcomm to address the vulnerability.
Monitor security bulletins and updates from the vendor for any relevant information.

Long-Term Security Practices

Regularly update the firmware and software on affected devices to patch known vulnerabilities.
Implement network security measures to detect and block potentially malicious network traffic.

Patching and Updates

Stay informed about security advisories and patches released by Qualcomm to safeguard your devices against potential exploits.