CVE-2020-24388

PoC —

CVSS 3.1

7.5 high

EPSS

2%p77

Published

Oct 19, 2020 (Oct 19, 2020)

Modified

Jun 17, 2026

Description

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.

Vendors: yubico fedoraproject
Products: yubihsm-shell, fedora
Weakness: CWE-20, CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.8%)

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