CVE-2021-0935 : What You Need to Know

A detailed overview of CVE-2021-0935 focusing on the vulnerability in the Android kernel leading to a possible out of bounds write and local privilege escalation.

Understanding CVE-2021-0935

Exploring the impact, technical details, and mitigation strategies for CVE-2021-0935.

What is CVE-2021-0935?

CVE-2021-0935 is a vulnerability found in ip6_xmit of ip6_output.c in the Android kernel. It poses a risk of out of bounds write due to a use after free, potentially allowing local privilege escalation without the need for user interaction.

The Impact of CVE-2021-0935

The exploitation of this vulnerability could result in an elevation of privilege, requiring system execution privileges for a successful attack.

Technical Details of CVE-2021-0935

Understanding the nature of the vulnerability and its implications on affected systems.

Vulnerability Description

The vulnerability arises from a use after free issue in ip6_xmit of ip6_output.c, presenting an opportunity for attackers to execute arbitrary code with elevated privileges.

Affected Systems and Versions

The issue affects Android devices using the Android kernel, potentially leaving them vulnerable to privilege escalation attacks.

Exploitation Mechanism

By leveraging the out of bounds write flaw in ip6_xmit, threat actors could exploit the vulnerability to gain unauthorized access to the system.

Mitigation and Prevention

Guidance on how to address and prevent the risks associated with CVE-2021-0935.

Immediate Steps to Take

Security measures that can be implemented immediately to mitigate the impact of the vulnerability, including security patches and updates.

Long-Term Security Practices

Establishing long-term security protocols and best practices to enhance overall system security and prevent similar vulnerabilities in the future.

Patching and Updates

Regularly applying security patches and updates to ensure that the Android kernel and associated systems are protected against known vulnerabilities.