CVE-2018-5851 Explained : Impact and Mitigation

Android for MSM, Firefox OS for MSM, and QRD Android devices by Qualcomm are affected by a buffer overflow vulnerability when processing specific messages.

Understanding CVE-2018-5851

This CVE involves a buffer overflow issue in Android devices utilizing the Linux kernel, potentially leading to security breaches.

What is CVE-2018-5851?

CVE-2018-5851 is a vulnerability that arises when handling a HTT_T2H_MSG_TYPE_TX_COMPL_IND message with an out-of-range num_msdus value in Android releases from CAF.

The Impact of CVE-2018-5851

The vulnerability can be exploited to trigger a buffer overflow, which may allow attackers to execute arbitrary code or cause a denial of service on affected devices.

Technical Details of CVE-2018-5851

Android devices using the Linux kernel are susceptible to this buffer overflow vulnerability.

Vulnerability Description

The issue occurs due to improper validation of array index in WLAN, potentially leading to a buffer overflow.

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 by sending a malicious HTT_T2H_MSG_TYPE_TX_COMPL_IND message with a num_msdus value outside the valid range.

Mitigation and Prevention

To address CVE-2018-5851, follow these steps:

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update device firmware to the latest versions.
Implement network security measures to detect and prevent buffer overflow attacks.

Patching and Updates

Ensure all Android devices are updated with the latest security patches.
Stay informed about security advisories from Qualcomm and apply recommended updates.