CVE-2018-11851 Explained : Impact and Mitigation

Android for MSM, Firefox OS for MSM, and QRD Android devices using the Linux kernel are susceptible to an out-of-bounds write vulnerability due to inadequate input verification.

Understanding CVE-2018-11851

This CVE involves a buffer copy vulnerability in WLAN that can lead to a stack-based buffer overflow.

What is CVE-2018-11851?

This CVE pertains to a lack of input validation in various Android releases from CAF that utilize the Linux kernel, potentially allowing attackers to write beyond the allocated buffer space.

The Impact of CVE-2018-11851

The vulnerability can be exploited to execute arbitrary code or crash the system, posing a significant security risk to affected devices.

Technical Details of CVE-2018-11851

Android devices using the Linux kernel are affected by this vulnerability in the WLAN component.

Vulnerability Description

An out-of-bounds write to the kernel stack can occur due to the absence of input verification for buffer length calculation.

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 sending specially crafted input to the affected system, triggering the buffer overflow.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-11851.

Immediate Steps to Take

Apply security patches provided by Qualcomm or the device manufacturer promptly.
Monitor security bulletins and updates from trusted sources.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflow vulnerabilities.
Regularly update and patch software to mitigate known security risks.

Patching and Updates

Regularly check for and apply security updates and patches from Qualcomm or device vendors to address this vulnerability.