CVE-2024-45678
MEDIUM EPSS 24.7%
Published Sep 3, 20241y ago · Modified Jun 17, 20262w ago
4.2 CVSS 3.1
Published Sep 3, 2024 1y ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector Physical
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
24.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-203
Affected Products 36
| Vendor | Product | Version | Range |
|---|---|---|---|
| yubico | yubikey_5c_nfc_firmware | * | <5.7 |
| yubico | yubikey_5c_nfc | * | any |
| yubico | yubikey_5_nfc_firmware | * | <5.7 |
| yubico | yubikey_5_nfc | * | any |
| yubico | yubikey_5c_firmware | * | <5.7 |
| yubico | yubikey_5c | * | any |
| yubico | yubikey_5_nano_firmware | * | <5.7 |
| yubico | yubikey_5_nano | * | any |
| yubico | yubikey_5c_nano_firmware | * | <5.7 |
| yubico | yubikey_5c_nano | * | any |
| yubico | yubikey_5ci_firmware | * | <5.7 |
| yubico | yubikey_5ci | * | any |
| yubico | yubikey_5_nfc_fips_firmware | * | <5.7 |
| yubico | yubikey_5_nfc_fips | * | any |
| yubico | yubikey_5c_nfc_fips_firmware | * | <5.7 |
| yubico | yubikey_5c_nfc_fips | * | any |
| yubico | yubikey_5c_fips_firmware | * | <5.7 |
| yubico | yubikey_5c_fips | * | any |
| yubico | yubikey_5_nano_fips_firmware | * | <5.7 |
| yubico | yubikey_5_nano_fips | * | any |
| yubico | yubikey_5c_nano_fips_firmware | * | <5.7 |
| yubico | yubikey_5c_nano_fips | * | any |
| yubico | yubikey_5ci_fips_firmware | * | <5.7 |
| yubico | yubikey_5ci_fips | * | any |
| yubico | yubikey_c_bio_firmware | * | <5.7.2 |
| yubico | yubikey_c_bio | * | any |
| yubico | yubikey_bio_firmware | * | <5.7.2 |
| yubico | yubikey_bio | * | any |
| yubico | security_key_nfc_by_yubico_firmware | * | <5.7 |
| yubico | security_key_nfc_by_yubico | * | any |
| yubico | security_key_c_nfc_by_yubico_firmware | * | <5.7 |
| yubico | security_key_c_nfc_by_yubico | * | any |
| yubico | yubihsm_2_fips_firmware | * | <2.4.0 |
| yubico | yubihsm_2_fips | 2.2 | any |
| yubico | yubihsm_2_firmware | * | <2.4.0 |
| yubico | yubihsm_2 | 2.3.2 | any |
References 6
- arstechnica.com https://arstechnica.com/security/2024/09/yubikeys-are-vulnerable-to-cloning-attacks-thanks-to-newly-discovered-side-channel/
- news.ycombinator.com https://news.ycombinator.com/item?id=41434500
- ninjalab.io https://ninjalab.io/eucleak/
- ninjalab.io https://ninjalab.io/wp-content/uploads/2024/09/20240903_eucleak.pdf
- support.yubico.com https://support.yubico.com/hc/en-us/articles/15705749884444
- yubico.com https://www.yubico.com/support/security-advisories/ysa-2024-03/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.