CVE-2017-18056 Explained : Impact and Mitigation

Android platforms, including Android for MSM, Firefox OS for MSM, and QRD Android, are affected by a vulnerability in the wma_unified_bcntx_status_event_handler() function in the Linux kernel. Improper input validation for the vdev_id parameter may lead to an out-of-bounds memory read.

Understanding CVE-2017-18056

This CVE identifies a security flaw in the Linux kernel used in various Android platforms, potentially allowing an attacker to perform an out-of-bounds memory read.

What is CVE-2017-18056?

The vulnerability lies in the wma_unified_bcntx_status_event_handler() function in the Linux kernel, affecting Android for MSM, Firefox OS for MSM, and QRD Android. It arises from inadequate input validation for the vdev_id parameter.

The Impact of CVE-2017-18056

The vulnerability could be exploited by an attacker to trigger an out-of-bounds memory read, potentially leading to unauthorized access or information disclosure.

Technical Details of CVE-2017-18056

The technical aspects of the CVE provide insights into the vulnerability's description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The flaw in the wma_unified_bcntx_status_event_handler() function results from improper input validation for the vdev_id parameter received from firmware, potentially enabling an out-of-bounds memory read.

Affected Systems and Versions

Android for MSM
Firefox OS for MSM
QRD Android

Exploitation Mechanism

The vulnerability can be exploited by manipulating the vdev_id parameter to trigger an out-of-bounds memory read, potentially leading to unauthorized access to sensitive information.

Mitigation and Prevention

Protecting systems from CVE-2017-18056 requires immediate steps and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor vendor security bulletins for updates related to this vulnerability.

Long-Term Security Practices

Implement strict input validation mechanisms in software development processes.
Conduct regular security assessments and audits to identify and address potential vulnerabilities.

Patching and Updates

Regularly update the affected systems with the latest patches and security updates to mitigate the risk of exploitation.