CVE-2017-8279 : Exploit Details and Defense Strategies

Android for MSM, Firefox OS for MSM, QRD Android, and all Android releases from CAF using the Linux kernel are affected by a race condition vulnerability that can lead to buffer over-read and accessing freed memory.

Understanding CVE-2017-8279

This CVE involves a Time-of-check Time-of-use (TOCTOU) Race Condition in Core.

What is CVE-2017-8279?

A race condition protection issue in the message mask table update process in various Qualcomm products can result in buffer over-read and accessing freed memory.

The Impact of CVE-2017-8279

The vulnerability can potentially allow attackers to exploit the system, leading to information disclosure or system compromise.

Technical Details of CVE-2017-8279

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The absence of race condition protection during the update of the message mask table can cause a buffer over-read. Additionally, accessing freed memory may occur when updating msg_mask information.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability arises due to missing race condition protection while updating the message mask table, allowing for buffer over-read and potential access to freed memory.

Mitigation and Prevention

Protecting systems from CVE-2017-8279 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Qualcomm or relevant vendors promptly.
Monitor security bulletins and updates for any patches related to this vulnerability.

Long-Term Security Practices

Implement secure coding practices to prevent race condition vulnerabilities.
Conduct regular security assessments and audits to identify and address similar issues.

Patching and Updates

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