CVE-2019-2054 : Exploit Details and Defense Strategies
Learn about CVE-2019-2054, a vulnerability in the Android kernel allowing seccomp bypass for local privilege escalation. Find mitigation steps and update recommendations here.
Android Kernel Seccomp Bypass Vulnerability
Understanding CVE-2019-2054
A vulnerability in the Android kernel prior to version 4.8 could allow for a seccomp bypass, leading to the escalation of local privilege without additional execution privileges.
What is CVE-2019-2054?
- The vulnerability arises from seccomp policies allowing the use of ptrace, enabling privilege escalation without user interaction.
- The affected product is Android, specifically the Android kernel.
The Impact of CVE-2019-2054
- Successful exploitation could result in the escalation of local privilege without the need for additional execution privileges.
Technical Details of CVE-2019-2054
Vulnerability Description
- Before kernel version 4.8, the seccomp implementation may be vulnerable to a bypass due to policies allowing ptrace usage.
Affected Systems and Versions
- Product: Android
- Versions: Android kernel
Exploitation Mechanism
- The vulnerability allows for the escalation of local privilege without requiring additional execution privileges.
Mitigation and Prevention
Immediate Steps to Take
- Apply patches provided by the vendor promptly.
- Monitor vendor security bulletins for updates.
Long-Term Security Practices
- Regularly update the Android kernel to the latest version.
- Implement strict security policies to limit privilege escalation.
Patching and Updates
- Keep the Android kernel up to date with the latest security patches.