CVE-2021-0303 : Security Advisory and Response
Learn about CVE-2021-0303, a critical use after free vulnerability in Android-11 devices that allows local privilege escalation without user interaction. Find mitigation steps and update recommendations.
This CVE-2021-0303 impacts Android devices running Android-11. It involves a use after free vulnerability in dispatchGraphTerminationMessage() of packages/services/Car/computepipe/runner/graph/StreamSetObserver.cpp, potentially leading to local privilege escalation without requiring user interaction.
Understanding CVE-2021-0303
This section will delve into the details of the CVE-2021-0303 vulnerability, its impact, technical aspects, and mitigation strategies.
What is CVE-2021-0303?
The CVE-2021-0303 vulnerability exists in dispatchGraphTerminationMessage() of StreamSetObserver.cpp in Android-11, allowing attackers to exploit a use after free issue through a race condition.
The Impact of CVE-2021-0303
This vulnerability could be exploited by threat actors to locally escalate privileges on affected Android devices without the need for user interaction. Successful exploitation could grant unauthorized elevated access to the device.
Technical Details of CVE-2021-0303
Let's explore the technical specifics of CVE-2021-0303, including the vulnerability description, affected systems, and exploitation methods.
Vulnerability Description
The vulnerability stems from a race condition in the dispatchGraphTerminationMessage() function of StreamSetObserver.cpp, allowing for a potential use after free scenario.
Affected Systems and Versions
Android devices running version Android-11 are susceptible to this CVE, potentially exposing them to privilege escalation attacks.
Exploitation Mechanism
Threat actors can exploit this vulnerability to achieve local privilege escalation without user interaction, posing a security risk to affected devices.
Mitigation and Prevention
Discover the necessary measures to mitigate the risks posed by CVE-2021-0303 on Android devices.
Immediate Steps to Take
Users are advised to update their Android devices to the latest security patches provided by Google to address the CVE-2021-0303 vulnerability.
Long-Term Security Practices
Implement robust security practices, such as avoiding suspicious links and applications, to reduce the likelihood of exploitation of similar vulnerabilities in the future.
Patching and Updates
Regularly check for and apply security updates released by Google for Android-11 devices to safeguard against known vulnerabilities.