CVE-2021-27217

State: Published
Severity: Not scored
Published: Mar 4, 2021
Updated: Aug 3, 2024
Reserved: Feb 15, 2021

Description

An issue was discovered in the _send_secure_msg() function of Yubico yubihsm-shell through 2.0.3. The function does not correctly validate the embedded length field of an authenticated message received from the device. Out-of-bounds reads performed by aes_remove_padding() can crash the running process, depending on the memory layout. This could be used by an attacker to cause a client-side denial of service. The yubihsm-shell project is included in the YubiHSM 2 SDK product.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/Yubico/yubihsm-shell/releases
https://www.yubico.com/support/security-advisories/ysa-2021-01/
https://blog.inhq.net/posts/yubico-libyubihsm-vuln2

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.