CVE-2020-24388

An issue was discovered in the _send_secure_msg() function of yubihsm-shell through 2.0.2. The function does not validate the embedded length field of a message received from the device. This could lead to an oversized memcpy() call that will crash the running process. This could be used by an attacker to cause a denial of service.
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: 72%
VendorProductVersion
yubicoyubihsm-shell
𝑥
≤ 2.0.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://blog.inhq.net/posts/yubico-libyubihsm-vuln/
https://developers.yubico.com/yubihsm-shell/
https://github.com/Yubico/yubihsm-shell
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/
https://www.yubico.com/support/security-advisories/ysa-2020-06/
https://blog.inhq.net/posts/yubico-libyubihsm-vuln/
https://developers.yubico.com/yubihsm-shell/
https://github.com/Yubico/yubihsm-shell
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y77KQJW76M3PFOBFLBT6DLH2NWHYRNZO/
https://www.yubico.com/support/security-advisories/ysa-2020-06/