EFI: Do not import certificates from UEFI Secure Boot for T2 Macs
Summary
GSD-2022-1002947: efi: Do not import certificates from UEFI Secure Boot for T2 Macs. Affects Kernel versions < b34786b25d75f9c119696e6bdf3827f54ae3601b. No fix is published. How to fix ↓
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Background
The Kernel package is a critical component of the Linux operating system. It is responsible for managing the system's core functions, including process management, memory management, and device drivers. The EFI (Extensible Firmware Interface) is a specification that defines a software interface between the operating system and the platform firmware. It is used to initialize the hardware and boot the operating system. T2 Macs are Mac computers that feature the Apple T2 Security Chip, which provides secure boot capabilities.
Vulnerability Detail
The vulnerability identified as GSD-2022-1002947 in the Kernel package affects T2 Macs running Linux. It involves the improper importation of certificates from UEFI Secure Boot. This could potentially allow an attacker to bypass the secure boot process and execute malicious code during system startup. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability has been fixed in Linux Kernel version v5.17.14 by commit b34786b25d75f9c119696e6bdf3827f54ae3601b.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The vulnerability in the Kernel package that allows the improper importation of certificates from UEFI Secure Boot for T2 Macs running Linux has been identified and fixed in Linux Kernel version v5.17.14. It is crucial to update the Linux Kernel to this version or later to mitigate the potential risks associated with this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, if exploited, it could allow an attacker to bypass the secure boot process on T2 Macs running Linux and execute malicious code during system startup.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for open-source vulnerabilities, including GSD-2022-1002947.
Yes, the vulnerability has been fixed in Linux Kernel version v5.17.14 by commit b34786b25d75f9c119696e6bdf3827f54ae3601b. It is recommended to update your Linux Kernel to this version or later to mitigate the vulnerability.
Yes, all T2 Macs running Linux are potentially affected by this vulnerability. It is important to update the Linux Kernel to the fixed version to ensure the security of your system.
You can find more information about this vulnerability in the GSD-2022-1002947 JSON file available on the Cloud Security Alliance's GSD Database GitHub repository (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002947.json).
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