CVE-2021-30307 : Vulnerability Insights and Analysis

This article provides details about CVE-2021-30307, a vulnerability impacting a range of Qualcomm products like Snapdragon Auto, Compute, Connectivity, Consumer IOT, and Industrial IOT.

Understanding CVE-2021-30307

CVE-2021-30307 involves a possible denial of service risk due to the improper validation of DNS responses when specific query types are made in various Qualcomm products.

What is CVE-2021-30307?

The vulnerability in Snapdragon Auto, Compute, Connectivity, Consumer IOT, and Industrial IOT could lead to denial of service when DNS clients request PTR, NAPTR, or SRV query types.

The Impact of CVE-2021-30307

With a CVSS base score of 7.5 (High), this vulnerability poses a significant risk to network availability in the affected Qualcomm products.

Technical Details of CVE-2021-30307

Let's delve into the technical aspects of this vulnerability.

Vulnerability Description

The flaw arises from inadequate validation of DNS responses, exposing devices to potential denial of service attacks.

Affected Systems and Versions

Qualcomm's Snapdragon Auto, Compute, Connectivity, Consumer IOT, and Industrial IOT devices running specific firmware versions are susceptible to this vulnerability.

Exploitation Mechanism

By sending crafted requests with PTR, NAPTR, or SRV query types, an attacker can trigger a denial of service condition in the affected Qualcomm products.

Mitigation and Prevention

Understanding how to mitigate this CVE is crucial for maintaining security.

Immediate Steps to Take

Users are advised to apply patches or updates provided by Qualcomm to address the vulnerability promptly.

Long-Term Security Practices

Implementing robust network security measures and regularly updating firmware can help enhance overall system security.

Patching and Updates

Stay informed about firmware updates and security bulletins released by Qualcomm to prevent exploitation of this vulnerability.