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.
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| yubico | yubikey_5c_nfc_firmware | 5.7 | - |
| yubico | yubikey_5_nfc_firmware | 5.7 | - |
| yubico | yubikey_5c_firmware |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
18
Affected Products
6
References
yubico / yubikey_5c_nfc_firmware
| 5.7 |
| - |
| yubico | yubikey_5_nano_firmware | 5.7 | - |
| yubico | yubikey_5c_nano_firmware | 5.7 | - |
| yubico | yubikey_5ci_firmware | 5.7 | - |
| yubico | yubikey_5_nfc_fips_firmware | 5.7 | - |
| yubico | yubikey_5c_nfc_fips_firmware | 5.7 | - |
| yubico | yubikey_5c_fips_firmware | 5.7 | - |
| yubico | yubikey_5_nano_fips_firmware | 5.7 | - |
| yubico | yubikey_5c_nano_fips_firmware | 5.7 | - |
| yubico | yubikey_5ci_fips_firmware | 5.7 | - |
| yubico | yubikey_c_bio_firmware | 5.7.2 | - |
| yubico | yubikey_bio_firmware | 5.7.2 | - |
| yubico | security_key_nfc_by_yubico_firmware | 5.7 | - |
| yubico | security_key_c_nfc_by_yubico_firmware | 5.7 | - |
| yubico | yubihsm_2_fips_firmware | 2.4.0 | - |
| yubico | yubihsm_2_firmware | 2.4.0 | - |
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability
Impact