Vulnerability in Yubico Security Key C Nfc By
CVE-2024-45678
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.
EPSS: 0.003 (25.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Yubico Security_key_c_nfc_by_yubico
- Yubico Security_key_c_nfc_by_yubico_firmware
- Yubico Security_key_nfc_by_yubico
- Yubico Security_key_nfc_by_yubico_firmware
- Yubico Yubihsm_2 — versions 2.3.2
- Yubico Yubihsm_2_fips — versions 2.2
- Yubico Yubihsm_2_fips_firmware
- Yubico Yubihsm_2_firmware
- Yubico Yubikey_5c
- Yubico Yubikey_5c_fips
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (Third Party Advisory, Mitigation)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Technical Description)
- cve@mitre.org (Issue Tracking)
- cve@mitre.org (Press/Media Coverage)
Frequently asked questions
- What is CVE-2024-45678?
- CVE-2024-45678 is a medium-severity vulnerability in Yubico Security Key C Nfc By, classified under Observable Discrepancy. CVSS score: 4.2/10. Published 2024-09-03.
- How severe is CVE-2024-45678?
- Medium severity. CVSS v3 base score is 4.2 out of 10.
- Is CVE-2024-45678 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.