CVE Vulnerability

CVE-2021-43399

The Yubico YubiHSM YubiHSM2 library 2021.08, included in the yubihsm-shell project, does not properly validate the length of some operations including SSH signing requests, and some data operations received from a YubiHSM 2 device.

7.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.yubico.com/support/security-advisories/ysa-2021-04/ Vendor Advisory
https://blog.inhq.net/posts/yubico-yubihsm-shell-vuln3/ Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:yubico:yubihsm_2_software_development_kit:*:*:*:*:*:*:*:*
Information

Published : 2021-12-08 07:15

Updated : 2022-04-04 02:04

NVD link : CVE-2021-43399

Mitre link : CVE-2021-43399

Products Affected
No products.
CWE
CWE-787