A set of vulnerabilities, collectively known as LogoFAIL, has been discovered in the UEFI firmware, affecting both x86 and ARM-based systems. These vulnerabilities can compromise the security of millions of devices by allowing attackers to execute arbitrary payloads and bypass critical security features such as Secure Boot and Intel Boot Guard.
The vulnerabilities include a heap-based buffer overflow flaw and an out-of-bounds read in the image parsing libraries embedded into the UEFI firmware. The implications of LogoFAIL are significant, as it can completely compromise a system's security and grant attackers deep control over the affected systems.
The vulnerabilities were found in firmware from Insyde, AMI, and Phoenix, with over half assigned a high severity rating. The impacted firmware is shipped with devices from companies such as Acer, Dell, HP, Lenovo, and Samsung, potentially exposing millions of devices worldwide.
Mitigation steps include regularly updating firmware, staying informed about security advisories from device manufacturers, employing security solutions that monitor firmware integrity, conducting regular security audits, and following cybersecurity best practices. Immediate action is required to patch these vulnerabilities and safeguard systems.
The details of the attack were presented at the Black Hat Europe conference and have been published in a technical blog post and a proof-of-concept video. The security community is closely monitoring the situation and awaiting further details on the vulnerabilities.