CVE-2021-0696 Explained : Impact and Mitigation

A detailed overview of CVE-2021-0696 focusing on the vulnerability, impact, technical details, and mitigation steps.

Understanding CVE-2021-0696

In dllist_remove_node of TBD, a potential use after free bug exists due to a race condition, leading to local privilege escalation without requiring additional execution privileges. No user interaction is necessary for exploitation.

What is CVE-2021-0696?

The CVE-2021-0696 vulnerability refers to a use after free bug in dllist_remove_node of TBD, allowing for local privilege escalation on the affected systems without needing additional execution privileges or user interaction.

The Impact of CVE-2021-0696

The impact of CVE-2021-0696 can result in a local escalation of privilege, potentially allowing malicious actors to gain elevated access on the affected Android devices running the specified versions.

Technical Details of CVE-2021-0696

This section dives into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

CVE-2021-0696 involves a use after free bug in dllist_remove_node of TBD due to a race condition, enabling threat actors to locally escalate privileges on Android devices running the mentioned versions.

Affected Systems and Versions

The vulnerability impacts the Android operating system, specifically affecting devices running Android SoC versions, leading to the possibility of privilege escalation.

Exploitation Mechanism

The exploitation of CVE-2021-0696 revolves around triggering the use after free bug in dllist_remove_node of TBD through a race condition, allowing threat actors to escalate privileges without user interaction.

Mitigation and Prevention

Explore the immediate steps, long-term security practices, and the importance of patching and updates to safeguard against CVE-2021-0696.

Immediate Steps to Take

Immediately apply security updates and patches provided by the official vendor to mitigate the risk of privilege escalation through CVE-2021-0696. Ensure all Android devices are up-to-date with the latest security fixes.

Long-Term Security Practices

Implement robust security measures such as regular security audits, employee training on safe computing practices, and network segmentation to enhance overall cybersecurity posture and prevent similar vulnerabilities.

Patching and Updates

Stay vigilant for security bulletins and updates from official sources like Google Android to address CVE-2021-0696 promptly. Timely patching is crucial in preventing exploit attempts and protecting systems from potential risks.