CVE-2021-30350 : What You Need to Know

This article provides detailed information about CVE-2021-30350, a vulnerability identified in Qualcomm products, which could lead to memory corruption.

Understanding CVE-2021-30350

CVE-2021-30350 is a security vulnerability found in various Qualcomm products due to the lack of MBN header size verification against the input buffer. This flaw may result in memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, and Snapdragon Wearables.

What is CVE-2021-30350?

The vulnerability arises from improper verification of header sizes, enabling attackers to corrupt memory in affected Qualcomm products. The security issue could potentially be exploited by threat actors to compromise the integrity, confidentiality, and availability of the targeted systems.

The Impact of CVE-2021-30350

The impact of this CVE includes a high severity rating with a base score of 8.4 according to CVSS v3.1 metrics. With a low attack complexity and local attack vector, the vulnerability does not require any privileges for exploitation. The confidentiality, integrity, and availability of the affected systems are at significant risk.

Technical Details of CVE-2021-30350

The following technical details outline the specifics of the CVE:

Vulnerability Description

The lack of MBN header size verification allows for memory corruption in Snapdragon series products, potentially leading to severe security consequences.

Affected Systems and Versions

Several Qualcomm products are affected by this vulnerability, including Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, and Snapdragon Wearables. A wide range of versions across these product lines are vulnerable.

Exploitation Mechanism

By exploiting the improper authentication in core systems, threat actors can manipulate the lack of header size verification to trigger memory corruption, posing a serious threat to the affected devices.

Mitigation and Prevention

To address CVE-2021-30350, users and administrators are advised to take the following steps:

Immediate Steps to Take

Apply security patches provided by Qualcomm to mitigate the vulnerability.
Monitor official bulletins and security advisories for updates and recommendations.

Long-Term Security Practices

Implement regular security updates and patches to safeguard against known vulnerabilities.
Employ network segmentation and access controls to restrict unauthorized access to critical systems.

Patching and Updates

Regularly check for firmware updates and patches from Qualcomm for the affected products to maintain the security of your devices.