CVE-2024-45678

EUVD-2024-41550
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.2 MEDIUM
PHYSICAL
HIGH
NONE
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA-ADPADP
4.2 MEDIUM
PHYSICAL
HIGH
NONE
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 47%
Affected Products (NVD)
VendorProductVersion
yubicoyubikey_5c_nfc_firmware
𝑥
< 5.7
yubicoyubikey_5_nfc_firmware
𝑥
< 5.7
yubicoyubikey_5c_firmware
𝑥
< 5.7
yubicoyubikey_5_nano_firmware
𝑥
< 5.7
yubicoyubikey_5c_nano_firmware
𝑥
< 5.7
yubicoyubikey_5ci_firmware
𝑥
< 5.7
yubicoyubikey_5_nfc_fips_firmware
𝑥
< 5.7
yubicoyubikey_5c_nfc_fips_firmware
𝑥
< 5.7
yubicoyubikey_5c_fips_firmware
𝑥
< 5.7
yubicoyubikey_5_nano_fips_firmware
𝑥
< 5.7
yubicoyubikey_5c_nano_fips_firmware
𝑥
< 5.7
yubicoyubikey_5ci_fips_firmware
𝑥
< 5.7
yubicoyubikey_c_bio_firmware
𝑥
< 5.7.2
yubicoyubikey_bio_firmware
𝑥
< 5.7.2
yubicosecurity_key_nfc_by_yubico_firmware
𝑥
< 5.7
yubicosecurity_key_c_nfc_by_yubico_firmware
𝑥
< 5.7
yubicoyubihsm_2_fips_firmware
𝑥
< 2.4.0
yubicoyubihsm_2_firmware
𝑥
< 2.4.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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
https://www.yubico.com/support/security-advisories/ysa-2024-03/