CVE-2021-0640 : What You Need to Know

In noteAtomLogged of StatsdStats.cpp, there is a possible out of bounds write vulnerability in Android versions 9, 10, and 11. This vulnerability could allow a local attacker to escalate privileges without requiring additional execution privileges, and it does not need user interaction for exploitation.

Understanding CVE-2021-0640

This section provides insights into the nature and impact of CVE-2021-0640.

What is CVE-2021-0640?

The CVE-2021-0640 vulnerability exists in noteAtomLogged of StatsdStats.cpp in Android versions 9, 10, and 11. It allows an attacker to perform an out of bounds write due to a missing bounds check, potentially leading to a local privilege escalation.

The Impact of CVE-2021-0640

The impact of this vulnerability is the potential escalation of privileges for a local attacker without requiring further execution permissions, making it a critical security issue for affected Android devices.

Technical Details of CVE-2021-0640

This section outlines the technical details of the CVE-2021-0640 vulnerability.

Vulnerability Description

The vulnerability arises from a missing bounds check in noteAtomLogged of StatsdStats.cpp, which may enable an out of bounds write, paving the way for privilege escalation.

Affected Systems and Versions

Affected systems include Android versions 9, 10, and 11, making devices operating on these versions susceptible to this security flaw.

Exploitation Mechanism

An attacker could exploit this vulnerability locally, without the need for additional user privileges or interaction, potentially leading to elevated privileges.

Mitigation and Prevention

Learn about the immediate steps and long-term practices to protect your systems.

Immediate Steps to Take

Immediate actions include applying security updates and patches provided by the vendor and monitoring for any signs of exploitation.

Long-Term Security Practices

Implement robust security measures such as regular updates, security best practices, and monitoring for emerging threats to prevent similar vulnerabilities.

Patching and Updates

Ensure that all affected systems are promptly patched with the latest security updates issued by the vendor to mitigate the CVE-2021-0640 vulnerability.