#VU51243 Out-of-bounds read in yubihsm-shell - CVE-2021-27217 

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Main Vulnerability Database Vulnerabilities #VU51243

#VU51243 Out-of-bounds read in yubihsm-shell - CVE-2021-27217

Published: March 5, 2021


Vulnerability identifier: #VU51243
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-27217
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
yubihsm-shell
Software vendor:
Yubico

Description

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

The vulnerability exists due to a boundary condition when validating the length of authenticated messages during device communication. A remote attacker can send specially crafted data to the system and cause the yubihsm library to fail with a “Not enough space” error.


Remediation

Install updates from vendor's website.

External links