CVE-2017-11033 : Security Advisory and Response

Android for MSM, Firefox OS for MSM, QRD Android, and all Android releases from CAF using the Linux kernel are affected by a Use After Free vulnerability in the coresight-tmc driver.

Understanding CVE-2017-11033

This CVE involves a Use After Free situation in the coresight-tmc driver of various Qualcomm products running Android releases from CAF with the Linux kernel.

What is CVE-2017-11033?

A Use After Free vulnerability occurs when there is a simultaneous reading and enabling of the ETR device right after adjusting the buffer size in the affected systems.

The Impact of CVE-2017-11033

This vulnerability could potentially lead to a Use After Free condition, allowing an attacker to exploit the system by manipulating the buffer size.

Technical Details of CVE-2017-11033

The technical aspects of this CVE are as follows:

Vulnerability Description

The vulnerability arises from a specific sequence of actions in the coresight-tmc driver, leading to a Use After Free scenario.

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

The vulnerability is exploited by triggering a simultaneous read and enable operation on the ETR device after modifying the buffer size.

Mitigation and Prevention

To address CVE-2017-11033, consider the following steps:

Immediate Steps to Take

Apply patches provided by Qualcomm or the respective vendors promptly.
Monitor security bulletins for updates and advisories.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities.
Conduct regular security assessments and audits of the system.

Patching and Updates

Regularly update the affected systems with the latest security patches.