CVE-2020-27066 Explained : Impact and Mitigation
Learn about CVE-2020-27066, a vulnerability in the Android kernel allowing local privilege escalation without user interaction. Find mitigation steps and patching advice.
Android kernel vulnerability leading to local privilege escalation.
Understanding CVE-2020-27066
A vulnerability in the Android kernel could allow an attacker to escalate privileges locally without user interaction.
What is CVE-2020-27066?
- The issue lies in xfrm6_tunnel_free_spi of net/ipv6/xfrm6_tunnel.c
- It involves a use-after-free vulnerability due to improper locking
- Exploitation could result in local privilege escalation
The Impact of CVE-2020-27066
- Attackers could gain system execution privileges without user interaction
Technical Details of CVE-2020-27066
Vulnerability Description
- Use-after-free vulnerability in xfrm6_tunnel_free_spi
- Improper locking leads to the possibility of privilege escalation
Affected Systems and Versions
- Product: Android
- Versions: Android kernel
Exploitation Mechanism
- Attackers can exploit the vulnerability locally without user interaction
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by the vendor
- Monitor vendor security bulletins for updates
Long-Term Security Practices
- Regularly update and patch systems to prevent vulnerabilities
- Implement least privilege access controls
Patching and Updates
- Stay informed about security updates from the Android vendor