CVE-2018-11826 Explained : Impact and Mitigation

Android for MSM, Firefox OS for MSM, and QRD Android devices are vulnerable to a buffer overflow in the WLAN ext scan handler due to an integer overflow issue.

Understanding CVE-2018-11826

This CVE identifies a critical vulnerability in various Android releases that use the Linux kernel, potentially leading to a buffer overflow in the WLAN ext scan handler.

What is CVE-2018-11826?

This CVE pertains to a buffer overflow vulnerability in the WLAN ext scan handler found in Android for MSM, Firefox OS for MSM, and QRD Android devices. The issue arises from the lack of an integer overflow check during memory calculations.

The Impact of CVE-2018-11826

The vulnerability could allow an attacker to execute arbitrary code, compromise the affected system, or cause a denial of service (DoS) condition.

Technical Details of CVE-2018-11826

Android devices using the Linux kernel are susceptible to this buffer overflow vulnerability due to an integer overflow issue in the WLAN ext scan handler.

Vulnerability Description

The lack of an integer overflow check during memory calculation in Android releases can result in a buffer overflow in the WLAN ext scan handler, potentially leading to security breaches.

Affected Systems and Versions

Product: Android for MSM, Firefox OS for MSM, QRD Android
Vendor: Qualcomm, Inc.
Versions: All Android releases from CAF using the Linux kernel

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input to trigger the buffer overflow, potentially gaining unauthorized access or disrupting system operations.

Mitigation and Prevention

To address CVE-2018-11826, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Apply security patches provided by Qualcomm or the device manufacturer promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update software and firmware to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify and address weaknesses.
Educate users about safe browsing habits and the importance of security updates.

Patching and Updates

Ensure that all affected devices receive the latest security patches and updates to prevent exploitation of the vulnerability.