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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 58%
VendorProductVersion
yubicoyubihsm_2_software_development_kit
𝑥
≤ 2021.08
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://blog.inhq.net/posts/yubico-yubihsm-shell-vuln3/
https://www.yubico.com/support/security-advisories/ysa-2021-04/
https://blog.inhq.net/posts/yubico-yubihsm-shell-vuln3/
https://www.yubico.com/support/security-advisories/ysa-2021-04/