Vulnerability Report

CVE-2024-45678

Title: Yubico Yubihsm 2 Cryptographic Failures

Cryptographic Failures

Proof Of Concept

No public PoC currently indexed for CVE-2024-45678.

CWE Category CWE-203
Published Date Sep 03, 2024
Modified Date Mar 17, 2025
Exploit Status Not Found
Score 4.2 CVSS v3.1
Exploit Probability (EPSS)
0.33%

Vulnerability Summary

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.

Impacted Vendors

Y
yubico 18

Reference Links

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/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.2
Attack Vector
PHYSICAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity MEDIUM
4.2
Attack Vector
PHYSICAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2024-45678 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector PHYSICAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.