CVE-2018-11923 : Security Advisory and Response

A buffer overflow vulnerability in Qualcomm Snapdragon processors due to improper buffer length checks.

Understanding CVE-2018-11923

What is CVE-2018-11923?

If buffer length check is not properly conducted before copying, it can result in an integer overflow and ultimately lead to a buffer overflow vulnerability within various Qualcomm Snapdragon products.

The Impact of CVE-2018-11923

The vulnerability can be exploited to execute arbitrary code or cause a denial of service on affected devices.

Technical Details of CVE-2018-11923

Vulnerability Description

Improper buffer length check before copying can lead to an integer overflow and then a buffer overflow in Qualcomm Snapdragon processors.

Affected Systems and Versions

Products: Snapdragon Auto, Compute, Consumer IOT, Industrial IOT, Mobile
Versions: MDM9150, MDM9206, MDM9607, MDM9640, MDM9650, MSM8996AU, QCA6574AU, QCS605, SD 425, SD 427, SD 430, SD 435, SD 450, SD 625, SD 636, SD 712 / SD 710 / SD 670, SD 820A, SD 835, SD 845 / SD 850, SD 855, SDA660, SDM630, SDM660, SDX20, SDX24

Exploitation Mechanism

The vulnerability occurs within the WMA event handler when buffer length checks are not properly implemented.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by Qualcomm promptly.
Monitor Qualcomm's security bulletins for updates and advisories.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflow vulnerabilities.
Regularly update firmware and software to mitigate potential security risks.
Conduct security assessments and audits to identify and address vulnerabilities.

Patching and Updates

Regularly check for and apply security patches released by Qualcomm to address the CVE-2018-11923 vulnerability.