Input validation error in YubiHSM2 SDK and yubihsm-shell - CVE-2020-24387

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Main Vulnerability Database Vulnerabilities #VU47721

Input validation error in YubiHSM2 SDK and yubihsm-shell - CVE-2020-24387

Published: October 19, 2020


Vulnerability identifier: #VU47721
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-24387
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within yubihsm-shell library, which is part of the YubiHSM2 SDK. A maliciously-crafted YubiHSM2 device, or someone with access to the HTTP traffic between a client and server handling the device, could cause the yubihsm library to crash.


Affected software

YubiHSM2 SDK
yubihsm-shell
Fedora
yubihsm-shell

How to mitigate CVE-2020-24387

Install updates from vendor's website.

YubiHSM2 SDK - update to 2020.10
yubihsm-shell - update to 2.0.3-1.fc33

External References

Related Security Bulletins