CVE-2020-10751 Explained : Impact and Mitigation
Learn about CVE-2020-10751, a flaw in Linux kernel's SELinux LSM hook implementation before 5.7, allowing unauthorized access. Find mitigation steps and patching details here.
A flaw in the Linux kernel's SELinux LSM hook implementation before version 5.7 could allow bypassing netlink permission checks, impacting confidentiality.
Understanding CVE-2020-10751
A vulnerability in the Linux kernel affecting SELinux LSM hook implementation.
What is CVE-2020-10751?
The flaw in the SELinux LSM hook implementation incorrectly validates netlink messages, potentially allowing unauthorized access.
The Impact of CVE-2020-10751
- Base Score: 6.1 (Medium Severity)
- Confidentiality Impact: High
- Integrity Impact: Low
- Attack Vector: Local
- Privileges Required: Low
Technical Details of CVE-2020-10751
A detailed look at the vulnerability.
Vulnerability Description
The flaw in the SELinux LSM hook implementation incorrectly processes netlink messages, potentially granting unauthorized access.
Affected Systems and Versions
- Product: Kernel
- Vendor: The Linux Foundation
- Versions Affected: Before 5.7
Exploitation Mechanism
Attackers could exploit this vulnerability by crafting malicious netlink messages to bypass SELinux permission checks.
Mitigation and Prevention
Protecting systems from CVE-2020-10751.
Immediate Steps to Take
- Apply patches provided by the vendor promptly.
- Monitor vendor security advisories for updates.
Long-Term Security Practices
- Regularly update and patch the kernel to mitigate known vulnerabilities.
- Implement SELinux best practices to enhance system security.
- Conduct regular security assessments and audits.
- Stay informed about security threats and updates.
Patching and Updates
- Update to Linux kernel version 5.7 or newer to address the vulnerability.