Yubico YubiHSM 2 SDK YubiHSM Shell 2.4.0 Uninitialized Memory Read (YSA-2023-01)

high Nessus Plugin ID 269987

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Synopsis

The Yubico YubiHSM Shell, a component of YubiHSM 2 SDK, installed on the remote host is affected by an uninitialized memory read vulnability.

Description

The version of Yubico YubiHSM Shell, a component of YubiHSM 2 SDK, installed on the remote host is 2.4.0. It is, therefore, affected by an uninitlized memory read vulnerability:

- The PKCS11 module of the YubiHSM 2 SDK through 2023.01 does not properly validate the length of specific read operations on object metadata. This may lead to disclosure of uninitialized and previously used memory.
(CVE-2023-39908)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade YubiHSM Shell by installing the latest verison of the YubiHSM 2 SDK.

Plugin Details

Severity: High

ID: 269987

File Name: yubico_yubihsm_shell_2_4_0.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 10/10/2025

Updated: 10/10/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2023-39908

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: cpe:/a:yubico:yubihsm-shell, cpe:/a:yubico:yubihsm_2_sdk

Required KB Items: installed_sw/Yubico YubiHSM Shell

Patch Publication Date: 8/14/2023

Vulnerability Publication Date: 8/14/2023

Reference Information

CVE: CVE-2023-39908

IAVB: 2025-B-0169

Detections

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