CVSS 3.1
4.2 mediumCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NCVE-2024-45678
Medium (4.2) in yubico. EPSS 0.3% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
- CWE
- CWE-203
- Published
- Modified
- Record from
- the NVD, synced
Affected
- yubico:security_key_c_nfc_by_yubico_firmware
- yubico:security_key_nfc_by_yubico_firmware
- yubico:yubihsm_2_fips_firmware
- yubico:yubihsm_2_firmware
- yubico:yubikey_5_nano_fips_firmware
- yubico:yubikey_5_nano_firmware
- yubico:yubikey_5_nfc_fips_firmware
- yubico:yubikey_5_nfc_firmware
- yubico:yubikey_5c_fips_firmware
- yubico:yubikey_5c_firmware
- yubico:yubikey_5c_nano_fips_firmware
- yubico:yubikey_5c_nano_firmware
- yubico:yubikey_5c_nfc_fips_firmware
- yubico:yubikey_5c_nfc_firmware
- yubico:yubikey_5ci_fips_firmware
- yubico:yubikey_5ci_firmware
- yubico:yubikey_bio_firmware
- yubico:yubikey_c_bio_firmware
References
- https://arstechnica.com/security/2024/09/yubikeys-are-vulnerable-to-cloning-attacks-thanks-to-newly-discovered-side-channel/
- https://news.ycombinator.com/item?id=41434500
- https://ninjalab.io/eucleak/
- https://ninjalab.io/wp-content/uploads/2024/09/20240903_eucleak.pdf
- https://support.yubico.com/hc/en-us/articles/15705749884444