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January 8, 2021 06:15 pm

New Side-Channel Attack Can Recover Encryption Keys From Google Titan Security Keys

A duo of French security researchers has discovered a vulnerability impacting chips used inside Google Titan and YubiKey hardware security keys. From a report: The vulnerability allows threat actors to recover the primary encryption key used by the hardware security key to generate cryptographic tokens for two-factor authentication (2FA) operations. Once obtained, the two security researchers say the encryption key, an ECDSA private key, would allow threat actors to clone Titan, YubiKey, and other keys to bypass 2FA procedures. However, while the attack sounds disastrous for Google and Yubico security key owners, its severity is not what it seems. In a 60-page PDF report, Victor Lomne and Thomas Roche, researchers with Montpellier-based NinjaLab, explain the intricacies of the attack, also tracked as CVE-2021-3011. For starters, the attack won't work remotely against a device, over the internet, or over a local network. To exploit any Google Titan or Yubico security key, an attacker would first need to get their hands on a security key in the first place.

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