CVE-2018-5834 : Exploit Details and Defense Strategies

Android releases from CAF utilizing the Linux kernel may be vulnerable to a buffer overwrite in the __wlan_hdd_cfg80211_vendor_scan() function.

Understanding CVE-2018-5834

This CVE affects Qualcomm's Android for MSM, Firefox OS for MSM, and QRD Android versions.

What is CVE-2018-5834?

The vulnerability lies in the __wlan_hdd_cfg80211_vendor_scan() function in Android releases from CAF using the Linux kernel, potentially leading to a buffer overwrite.

The Impact of CVE-2018-5834

The security flaw could allow attackers to trigger a buffer overwrite, leading to potential security breaches and unauthorized access to sensitive information.

Technical Details of CVE-2018-5834

Qualcomm's affected products and versions are detailed below:

Vulnerability Description

The vulnerability is due to incorrect buffer size calculation in WLAN, specifically in the __wlan_hdd_cfg80211_vendor_scan() function.

Affected Systems and Versions

Products: Android for MSM, Firefox OS for MSM, QRD Android
Versions: All Android releases from CAF using the Linux kernel

Exploitation Mechanism

Attackers can exploit this vulnerability to trigger a buffer overwrite, potentially leading to unauthorized access and security breaches.

Mitigation and Prevention

Immediate action and long-term security practices are crucial to mitigate the risks associated with CVE-2018-5834.

Immediate Steps to Take

Apply security patch level 2018-06-05 or later to address the vulnerability.
Monitor vendor security bulletins for updates and patches.

Long-Term Security Practices

Regularly update software and firmware to the latest versions.
Implement network segmentation and access controls to limit the impact of potential security breaches.

Patching and Updates

Stay informed about security updates and patches from Qualcomm and Android to protect against known vulnerabilities.