CVE-2019-9253 : Security Advisory and Response
Learn about CVE-2019-9253, a vulnerability in Android Version 10 where symmetric keys can be stored in the Trusted Execution Environment, potentially leading to local information disclosure. Find out how to mitigate this security risk.
Android-10 Symmetric Key Storage Vulnerability
Understanding CVE-2019-9253
What is CVE-2019-9253?
In Android Version 10, a vulnerability exists where symmetric keys can be stored in the Trusted Execution Environment (TEE) instead of the strongbox within KeyStore. This issue can lead to the disclosure of local information without requiring user interaction.
The Impact of CVE-2019-9253
This vulnerability could potentially result in the disclosure of local information when System execution privileges are present.
Technical Details of CVE-2019-9253
Vulnerability Description
Symmetric keys can be stored in the TEE instead of the strongbox within KeyStore, potentially leading to local information disclosure.
Affected Systems and Versions
- Affected Product: Android
- Affected Version: Android-10
Exploitation Mechanism
The vulnerability can be exploited without the need for user interaction, making it a critical security concern.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor official sources for updates and advisories.
Long-Term Security Practices
- Regularly update the device's operating system and applications.
- Implement strong access controls and encryption mechanisms.
Patching and Updates
Ensure that the affected systems are updated with the latest security patches to mitigate the risk of exploitation.