medium
4.2
CWE
203
Advisory Published
Updated

CVE-2024-45678

First published: Tue Sep 03 2024(Updated: )

Yubico YubiKey 5 Series devices with firmware before 5.7.0 and YubiHSM 2 devices with firmware before 2.4.0 allow an ECDSA secret-key extraction attack (that requires physical access and expensive equipment) in which an electromagnetic side channel is present because of a non-constant-time modular inversion for the Extended Euclidean Algorithm, aka the EUCLEAK issue. Other uses of an Infineon cryptographic library may also be affected.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
All of
Yubico YubiKey 5C NFC Firmware<5.7
Yubico YubiKey 5C NFC Firmware
All of
Yubico YubiKey 5C NFC Firmware<5.7
Yubico YubiKey 5 NFC Firmware
All of
Yubico Yubikey 5c NFC Firmware<5.7
Yubico YubiKey
All of
Yubico YubiKey 5 Nano Firmware<5.7
Yubico YubiKey 5 Nano Firmware
All of
Yubico YubiKey 5C Nano FIPS Firmware<5.7
Yubico YubiKey 5C Nano FIPS
All of
Yubico YubiKey 5Ci FIPS<5.7
Yubico YubiKey
All of
Yubico YubiKey 5C NFC FIPS Firmware<5.7
Yubico Security Key NFC
All of
Yubico YubiKey 5C NFC Firmware<5.7
Yubico YubiKey 5C NFC FIPS Firmware
All of
Yubico YubiKey 5C FIPS<5.7
Yubico YubiKey 5C FIPS Firmware
All of
Yubico YubiKey 5 Nano Firmware<5.7
Yubico Yubikey 5 Nano
All of
Yubico YubiKey 5 Nano FIPS Firmware<5.7
Yubico YubiKey 5C Nano FIPS Firmware
All of
Yubico YubiKey 5Ci FIPS<5.7
Yubico YubiKey
All of
Yubico YubiKey C Bio Firmware<5.7.2
Yubico Yubikey C Bio Firmware
All of
Yubico Yubikey C Bio Firmware<5.7.2
Yubico Yubikey C Bio Firmware
All of
Yubico YubiKey 5C NFC<5.7
Yubico Security Key NFC by Yubico Firmware
All of
Yubico Security Key C NFC By Yubico<5.7
Yubico Security Key C NFC
All of
Yubico YubiHSM 2 FIPS<2.4.0
YubiHSM 2=2.2
All of
Yubico YubiHSM 2<2.4.0
YubiHSM 2=2.3.2

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2024-45678?

    The severity of CVE-2024-45678 is classified as critical due to its potential for sensitive data leakage through physical attacks.

  • How do I fix CVE-2024-45678?

    To fix CVE-2024-45678, update the firmware of the affected Yubico devices to version 5.7.0 or later for YubiKey and 2.4.0 or later for YubiHSM 2.

  • What devices are affected by CVE-2024-45678?

    CVE-2024-45678 affects YubiKey 5 Series devices with firmware prior to 5.7.0 and YubiHSM 2 devices with firmware before 2.4.0.

  • What is the exploit method for CVE-2024-45678?

    The exploit method for CVE-2024-45678 involves an ECDSA secret-key extraction attack that requires physical access and specialized equipment.

  • Is physical access required to exploit CVE-2024-45678?

    Yes, physical access is required to exploit CVE-2024-45678 due to the nature of the electromagnetic side channel attack.

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