CVE-2019-2309 : Exploit Details and Defense Strategies

This CVE-2019-2309 article provides insights into a vulnerability affecting various Qualcomm Snapdragon platforms, potentially leading to an integer overflow issue when storing calibrated data in the cache.

Understanding CVE-2019-2309

The vulnerability in CVE-2019-2309 poses a risk of integer overflow due to the length of received data exceeding the actual data length, impacting multiple Qualcomm Snapdragon platforms.

What is CVE-2019-2309?

When storing calibrated data from firmware in the cache, an integer overflow may occur if the length of the received data surpasses the real data length. This vulnerability affects several Snapdragon platforms, including Snapdragon Auto, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music.

The Impact of CVE-2019-2309

The vulnerability can lead to a buffer over-read issue in WLAN, potentially exposing affected systems to security risks.

Technical Details of CVE-2019-2309

The following technical details shed light on the specifics of CVE-2019-2309.

Vulnerability Description

The vulnerability arises from the risk of integer overflow when storing calibrated data in the cache, which can occur across various Qualcomm Snapdragon platforms.

Affected Systems and Versions

Affected Systems: Snapdragon Auto, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music
Affected Versions: MDM9150, MDM9206, MDM9607, MDM9640, MDM9650, MSM8996AU, QCA6174A, QCA6574AU, QCA9377, QCA9379, SD 210/SD 212/SD 205, SD 425, SD 625, SD 636, SD 712 / SD 710 / SD 670, SD 820A, SD 845 / SD 850, SDM660, SDX20

Exploitation Mechanism

The vulnerability can be exploited when storing calibrated data from firmware in the cache, leading to potential integer overflow if the received data length exceeds the actual data length.

Mitigation and Prevention

Understanding how to mitigate and prevent CVE-2019-2309 is crucial for maintaining system security.

Immediate Steps to Take

Apply patches provided by Qualcomm to address the vulnerability promptly.
Monitor Qualcomm's security bulletins for updates and recommendations.

Long-Term Security Practices

Regularly update firmware and software to ensure the latest security patches are in place.
Implement secure coding practices to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories and updates from Qualcomm to address CVE-2019-2309 effectively.