CVE-2018-5861 Explained : Impact and Mitigation

Android Kernel Heap Overflow Vulnerability

Understanding CVE-2018-5861

This CVE involves a vulnerability in various Android releases that use the Linux kernel, potentially leading to heap overwrite vulnerabilities.

What is CVE-2018-5861?

The vulnerability arises from inadequate checks on partition size, specifically affecting Android for MSM, Firefox OS for MSM, and QRD Android when loading secure applications from the boot loader.

The Impact of CVE-2018-5861

The vulnerability can result in heap overwrite vulnerabilities, potentially allowing attackers to execute arbitrary code or crash the system.

Technical Details of CVE-2018-5861

Vulnerability Description

The issue stems from incomplete checks on partition size, leading to heap overwrite vulnerabilities during the loading of secure applications.

Affected Systems and Versions

Android for MSM
Firefox OS for MSM
QRD Android

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious applications to trigger heap overflows during the loading process.

Mitigation and Prevention

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update the system and applications to mitigate potential vulnerabilities.
Implement secure coding practices to prevent heap overflow vulnerabilities.

Patching and Updates

Ensure that all relevant patches and updates from Qualcomm are applied to address this vulnerability.