CVE-2020-3668 : Security Advisory and Response

A buffer overflow vulnerability in multiple Qualcomm Snapdragon products could allow an attacker to execute arbitrary code or cause a denial of service.

Understanding CVE-2020-3668

This CVE involves a buffer overflow issue in various Qualcomm Snapdragon products, potentially leading to severe security risks.

What is CVE-2020-3668?

The vulnerability arises from a buffer overflow during the parsing of PMF enabled MCBC frames, due to incorrect frame length parsing in several Qualcomm Snapdragon product lines.

The Impact of CVE-2020-3668

The vulnerability could be exploited by an attacker to execute arbitrary code or trigger a denial of service (DoS) condition on affected devices, posing a significant security threat.

Technical Details of CVE-2020-3668

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability involves a buffer overflow while parsing PMF enabled MCBC frames, caused by incorrect frame length parsing in various Qualcomm Snapdragon products.

Affected Systems and Versions

Affected Products: Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking
Affected Versions: IPQ6018, IPQ8074, Kamorta, Nicobar, QCA6390, QCA8081, QCN7605, QCS404, QCS405, QCS605, Rennell, SA415M, SC7180, SC8180X, SDA845, SDM670, SDM710, SDM845, SDM850, SM6150, SM7150, SM8150, SXR1130

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious PMF enabled MCBC frames with incorrect length values, leading to a buffer overflow condition.

Mitigation and Prevention

Protecting systems from CVE-2020-3668 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches provided by Qualcomm to address the vulnerability promptly.
Monitor vendor communications for updates and security advisories.

Long-Term Security Practices

Regularly update firmware and software to mitigate potential security risks.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Ensure all affected devices are updated with the latest patches from Qualcomm to eliminate the vulnerability.