CVE-2020-3634 : Exploit Details and Defense Strategies

Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables by Qualcomm, Inc. are affected by a Multiple Read overflows issue due to improper length check while decoding Generic NAS transport/EMM info.

Understanding CVE-2020-3634

This CVE involves an Integer Underflow Issue in Multi Mode Call Processor.

What is CVE-2020-3634?

CVE-2020-3634 is a vulnerability affecting various Qualcomm Snapdragon products, leading to multiple read overflows due to inadequate length checks during the decoding of Generic NAS transport/EMM information.

The Impact of CVE-2020-3634

The vulnerability could allow attackers to exploit the system by triggering read overflows, potentially leading to unauthorized access or denial of service.

Technical Details of CVE-2020-3634

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The issue arises from improper length verification during the decoding of Generic NAS transport/EMM information, resulting in multiple read overflows.

Affected Systems and Versions

Products: Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables
Versions: APQ8053, APQ8096AU, APQ8098, Kamorta, MDM9150, MDM9205, MDM9206, MDM9607, MDM9625, MDM9635M, MDM9640, MDM9645, MDM9650, MDM9655, MSM8905, MSM8909W, MSM8917, MSM8953, MSM8996AU, MSM8998, Nicobar, QCM2150, QCS605, QCS610, QM215, Rennell, SA415M, Saipan, SC7180, SDA660, SDA845, SDM429, SDM429W, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX20, SDX24, SDX55, SM6150, SM7150, SM8150, SXR1130

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to trigger read overflows, potentially leading to security breaches or service disruptions.

Mitigation and Prevention

Protect your systems from CVE-2020-3634 with the following measures:

Immediate Steps to Take

Apply patches and updates provided by Qualcomm.
Monitor security bulletins and alerts for any emerging information.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Conduct regular security assessments and audits to identify vulnerabilities.
Educate users and IT staff on best practices for cybersecurity.
Employ intrusion detection systems to detect and respond to suspicious activities.

Patching and Updates

Stay informed about security updates and patches released by Qualcomm.
Promptly apply patches to affected systems to mitigate the risk of exploitation.