CVE-2021-39718 : Security Advisory and Response
Learn about CVE-2021-39718, a privilege escalation vulnerability in Android's ProtocolStkProactiveCommandAdapter::Init code. Understand the impact, affected systems, and mitigation steps.
This CVE-2021-39718 article provides insight into a possible out-of-bounds write vulnerability in Android's ProtocolStkProactiveCommandAdapter::Init code.
Understanding CVE-2021-39718
This section delves into the details of the vulnerability and its impact.
What is CVE-2021-39718?
The vulnerability stems from an incorrect bounds check in the ProtocolStkProactiveCommandAdapter::Init code of Android, potentially allowing a local privilege escalation without user interaction.
The Impact of CVE-2021-39718
The vulnerability could lead to local escalation of privilege with the requirement of System execution privileges.
Technical Details of CVE-2021-39718
Exploring the technical specifics of the vulnerability.
Vulnerability Description
The flaw exists in the ProtocolStkProactiveCommandAdapter::Init code, leading to a possible out-of-bounds write.
Affected Systems and Versions
- Affected Product: Android
- Affected Version: Android kernel
Exploitation Mechanism
The out-of-bounds write could be exploited locally to elevate privileges without the need for user interaction.
Mitigation and Prevention
Understanding the steps to mitigate and prevent exploitation of CVE-2021-39718.
Immediate Steps to Take
- Apply security patches provided by Android promptly
- Monitor security bulletins for further updates
Long-Term Security Practices
- Implement the principle of least privilege
- Regularly update and patch systems to address vulnerabilities
Patching and Updates
- Stay informed about security updates from Android
- Prioritize the installation of security patches to prevent exploitation