CVE-2021-0318 : Security Advisory and Response

This CVE-2021-0318 article provides details about a vulnerability in Android that could lead to local privilege escalation without the need for user interaction.

Understanding CVE-2021-0318

This CVE-2021-0318 vulnerability exists in the appendEventsToCacheLocked function of SensorEventConnection.cpp in Android.

What is CVE-2021-0318?

CVE-2021-0318 is a use-after-free vulnerability in Android that allows an attacker to perform an out-of-bounds write, resulting in local privilege escalation.

The Impact of CVE-2021-0318

The impact of this vulnerability is the potential for an attacker to escalate privileges locally on affected Android versions without requiring any additional execution privileges or user interaction.

Technical Details of CVE-2021-0318

This section covers specific technical details related to CVE-2021-0318.

Vulnerability Description

The vulnerability in appendEventsToCacheLocked in SensorEventConnection.cpp allows for an out-of-bounds write due to a use-after-free scenario.

Affected Systems and Versions

The affected product is Android, with impacted versions including Android-9, Android-8.1, Android-10, and Android-11.

Exploitation Mechanism

The exploitation of CVE-2021-0318 does not require user interaction and can be leveraged for local privilege escalation.

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent exploitation of CVE-2021-0318.

Immediate Steps to Take

Immediate actions include applying available patches or security updates from the Android provider.

Long-Term Security Practices

Implementing good security practices, such as regular software updates and following security bulletins, can help prevent similar vulnerabilities.

Patching and Updates

It is crucial to promptly apply patches released by the Android security team to address CVE-2021-0318 and enhance the overall security of the affected systems.