CVE-2019-9443 : Security Advisory and Response

A potential vulnerability has been identified in the Android kernel's vl53L0 driver, allowing for an out-of-bounds write by bypassing permissions, potentially leading to local privilege escalation without user interaction.

Understanding CVE-2019-9443

This CVE involves an elevation of privilege vulnerability in the Android kernel's vl53L0 driver.

What is CVE-2019-9443?

In the Android kernel's vl53L0 driver, a permissions bypass can result in an out-of-bounds write. Exploiting this issue could lead to local privilege escalation, requiring System execution privileges without user interaction.

The Impact of CVE-2019-9443

The vulnerability poses a risk of local privilege escalation without the need for user interaction, potentially allowing attackers to gain elevated privileges on affected systems.

Technical Details of CVE-2019-9443

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability in the Android kernel's vl53L0 driver allows for an out-of-bounds write by bypassing permissions, leading to local privilege escalation.

Affected Systems and Versions

Product: Android
Version: Android kernel

Exploitation Mechanism

The issue arises from a set_fs() call without restoring the previous limit, requiring System execution privileges for exploitation.

Mitigation and Prevention

Protecting systems from CVE-2019-9443 requires immediate action and long-term security practices.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor vendor security bulletins for updates and advisories.

Long-Term Security Practices

Regularly update and patch all software and systems.
Implement the principle of least privilege to restrict access rights.

Patching and Updates

Stay informed about security updates from the vendor.
Apply patches and updates as soon as they are available.