PKfail vulnerability lets hackers install UEFI malware on 200+ devices

TLDR:

• PKfail vulnerability affects over 200 device models, compromising Secure Boot.
• Exploiting the vulnerability allows attackers to install UEFI malware.

Article Summary:

The PKfail vulnerability is a critical security issue impacting over 200 device models in the Secure Boot ecosystem. This vulnerability undermines the Secure Boot process by exploiting weaknesses in managing Platform Keys (PK). Many devices ship with untrusted test keys from Independent BIOS Vendors like AMI, which are not replaced with secure keys by OEMs or device vendors. This vulnerability allows attackers to bypass Secure Boot protections and install persistent UEFI malware like bootkits, compromising the security chain from firmware to the operating system. The vulnerability affects multiple vendors spanning over a decade, with the potential for large-scale attacks on the supply chain. Recommendations for addressing the PKfail vulnerability include replacing test keys, implementing best practices for cryptographic key management, issuing firmware updates, applying security patches, monitoring devices, and ensuring proper Secure Boot configuration. By following these recommendations, both device vendors and users can enhance the overall security of their devices in the UEFI ecosystem.