CVE-2020-15780 : What You Need to Know
Discover the impact of CVE-2020-15780, a Linux kernel vulnerability allowing attackers to bypass secure boot restrictions. Learn about affected versions and mitigation steps.
An issue was discovered in drivers/acpi/acpi_configfs.c in the Linux kernel before 5.7.7. Injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30.
Understanding CVE-2020-15780
This CVE involves a vulnerability in the Linux kernel that could allow attackers to bypass lockdown and secure boot restrictions.
What is CVE-2020-15780?
CVE-2020-15780 is a security flaw in the Linux kernel that enables attackers to inject malicious ACPI tables through configfs, potentially circumventing lockdown and secure boot protections.
The Impact of CVE-2020-15780
The exploitation of this vulnerability could lead to unauthorized access and compromise of systems running affected versions of the Linux kernel.
Technical Details of CVE-2020-15780
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The vulnerability exists in drivers/acpi/acpi_configfs.c in Linux kernel versions prior to 5.7.7, allowing the injection of malicious ACPI tables via configfs.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions before 5.7.7
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting specially crafted ACPI tables through the configfs interface, potentially bypassing lockdown and secure boot protections.
Mitigation and Prevention
Protecting systems from CVE-2020-15780 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches provided by the Linux kernel maintainers to mitigate the vulnerability.
- Monitor for any unauthorized changes to ACPI tables.
- Implement strict access controls to prevent unauthorized access to configfs.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest secure versions.
- Conduct security audits to identify and address potential vulnerabilities in the system.
Patching and Updates
Ensure timely installation of security patches released by the Linux kernel maintainers to address CVE-2020-15780.