CVE-2020-3656 Explained : Impact and Mitigation

A vulnerability in Qualcomm Snapdragon processors could allow out-of-bound access in various Snapdragon devices, potentially leading to security risks.

Understanding CVE-2020-3656

This CVE identifies a specific vulnerability in Qualcomm Snapdragon processors that could be exploited to gain unauthorized access.

What is CVE-2020-3656?

The vulnerability allows for out-of-bound access in the MHI command process due to a lack of validation of the command channel ID value received from MHI devices in multiple Snapdragon product lines.

The Impact of CVE-2020-3656

The vulnerability could be exploited by attackers to gain unauthorized access to sensitive information, compromise device integrity, and potentially execute arbitrary code.

Technical Details of CVE-2020-3656

Qualcomm Snapdragon processors are affected by this vulnerability, impacting various Snapdragon product lines.

Vulnerability Description

The vulnerability arises from a lack of validation of the command channel ID value received from MHI devices, leading to out-of-bound access in the MHI command process.

Affected Systems and Versions

Products: Snapdragon Auto, Compute, Consumer IOT, Industrial IOT, Mobile, Voice & Music, Wearables
Versions: APQ8009, Kamorta, MDM9607, MSM8917, MSM8953, Nicobar, QCM2150, QCS405, QCS605, QM215, Rennell, SA6155P, SA8155P, Saipan, SC8180X, SDM429, SDM429W, SDM439, SDM450, SDM632, SDM710, SDM845, SDX55, SM6150, SM7150, SM8150, SM8250, SXR2130

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to perform out-of-bound access attacks, potentially leading to unauthorized access and data breaches.

Mitigation and Prevention

Steps to address and prevent the CVE-2020-3656 vulnerability.

Immediate Steps to Take

Apply security patches provided by Qualcomm promptly.
Monitor for any unusual activities on affected devices.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update firmware and software on affected devices.
Conduct security assessments and audits to identify and address vulnerabilities.
Educate users on safe computing practices and the importance of security updates.

Patching and Updates

Qualcomm has released security patches to address the vulnerability.
Ensure all affected devices are updated with the latest patches to mitigate the risk of exploitation.