New U-Boot flaws could enable stealthy firmware attacks

Six vulnerabilities in the U-Boot bootloader have been discovered, potentially allowing attackers to execute arbitrary code or crash devices during the boot process. These flaws affect the FIT signature verification functionality and could enable stealthy, persistent firmware-level attacks on embedded systems. Exploitation may not require physical access, especially on systems supporting remote firmware updates like BMCs. The vulnerabilities impact over 50 U-Boot releases and downstream vendor implementations, with older devices potentially remaining unpatched.

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