CVE-2020-3647 : Vulnerability Insights and Analysis

Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile, and Snapdragon Voice & Music devices by Qualcomm are affected by a potential buffer overflow vulnerability when accessing npu debugfs nodes with large buffer sizes.

Understanding CVE-2020-3647

This CVE identifies a stack-based overflow in the Neural Processing Unit (NPU) of Qualcomm's Snapdragon devices.

What is CVE-2020-3647?

The vulnerability involves a buffer overflow that occurs when accessing npu debugfs nodes "off"/"log" with large buffer sizes on various Qualcomm Snapdragon devices.

The Impact of CVE-2020-3647

The vulnerability could allow an attacker to execute arbitrary code or crash the system, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2020-3647

Qualcomm's Snapdragon Compute, Industrial IOT, Mobile, and Voice & Music devices are affected by this vulnerability.

Vulnerability Description

A potential buffer overflow occurs when accessing npu debugfs nodes with large buffer sizes on the affected Snapdragon devices.

Affected Systems and Versions

Products: Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music
Versions: MDM9607, QCS405, SC8180X, SDX55, SM6150, SM7150, SM8150

Exploitation Mechanism

The vulnerability can be exploited by accessing npu debugfs nodes "off"/"log" with large buffer sizes, triggering the buffer overflow.

Mitigation and Prevention

To address CVE-2020-3647, follow these steps:

Immediate Steps to Take

Apply patches provided by Qualcomm to fix the vulnerability.
Monitor Qualcomm's security bulletins for updates and advisories.

Long-Term Security Practices

Regularly update firmware and software on affected devices.
Implement network segmentation and access controls to limit exposure to potential attacks.
Conduct regular security assessments and penetration testing to identify and mitigate vulnerabilities.

Patching and Updates

Stay informed about security bulletins and patches released by Qualcomm.
Apply updates promptly to ensure the security of Snapdragon devices.