CVE-2021-0476 Explained : Impact and Mitigation
Learn about CVE-2021-0476 impacting Android devices, allowing local privilege escalation without user interaction. Find mitigation steps and affected versions.
Android devices are affected by a vulnerability known as CVE-2021-0476, which stems from a race condition in the FindOrCreatePeer function of btif_av.cc. This flaw could potentially result in a use-after-free scenario, opening up the possibility of a local privilege escalation without requiring additional execution privileges or user interaction. The affected versions include Android-11, Android-9, and Android-10.
Understanding CVE-2021-0476
This section delves into the details of the CVE-2021-0476 vulnerability.
What is CVE-2021-0476?
CVE-2021-0476 is a security flaw in the FindOrCreatePeer function of btif_av.cc in Android devices. It arises due to a race condition, leading to a potential use-after-free scenario.
The Impact of CVE-2021-0476
The vulnerability could enable a local escalation of privilege on affected Android devices without the need for additional user interaction or execution privileges.
Technical Details of CVE-2021-0476
Explore the technical specifics of CVE-2021-0476 in this section.
Vulnerability Description
The FindOrCreatePeer function in btif_av.cc exhibits a race condition that may result in a use-after-free, potentially allowing malicious actors to escalate their privileges locally.
Affected Systems and Versions
Android devices running versions Android-11, Android-9, and Android-10 are susceptible to CVE-2021-0476.
Exploitation Mechanism
Exploiting this vulnerability could enable threat actors to locally escalate their privileges on affected Android devices with no need for additional user interaction.
Mitigation and Prevention
Discover the measures to mitigate the impact of CVE-2021-0476 and prevent its exploitation.
Immediate Steps to Take
Users are advised to apply security patches promptly and stay informed about updates related to CVE-2021-0476 to safeguard their Android devices.
Long-Term Security Practices
Implementing robust security practices, such as regular software updates and employing security tools, can enhance the overall security posture of Android devices.
Patching and Updates
Ensuring timely installation of security patches released by Android is crucial to address CVE-2021-0476 and fortify the security of vulnerable devices.