CVE-2019-2121 Explained : Impact and Mitigation
Learn about CVE-2019-2121, a local privilege escalation vulnerability in Android OS. Find out how to mitigate the risk and apply necessary security patches.
Android operating system vulnerability with potential local privilege escalation.
Understanding CVE-2019-2121
A race condition in ActivityManagerService.attachApplication can lead to local privilege escalation without additional execution privileges.
What is CVE-2019-2121?
- Vulnerability in ActivityManagerService.attachApplication in Android OS
- Allows local privilege escalation without user interaction
- Specifically affects Android-9
The Impact of CVE-2019-2121
- Local privilege escalation vulnerability
- Exploitable without requiring additional execution privileges
Technical Details of CVE-2019-2121
Vulnerability Description
- Race condition in ActivityManagerService.attachApplication
- Enables local privilege escalation
Affected Systems and Versions
- Product: Android
- Affected Version: Android-9
Exploitation Mechanism
- No user interaction required for exploitation
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches promptly
- Monitor vendor security bulletins for updates
Long-Term Security Practices
- Implement least privilege access controls
- Regularly update and patch systems
- Conduct security assessments and audits
Patching and Updates
- Refer to the Android security bulletin for patch details