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CentOS 9 : opencryptoki-3.26.0-2.el9

medium Nessus Plugin ID 299200

Synopsis

The remote CentOS host is missing a security update for opencryptoki.

Description

The remote CentOS Linux 9 host has packages installed that are affected by a vulnerability as referenced in the opencryptoki-3.26.0-2.el9 build changelog.

 - openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. Versions 2.3.2 and above are vulnerable to symlink-following when running in privileged contexts. A token-group user can redirect file operations to arbitrary filesystem targets by planting symlinks in group-writable token directories, resulting in privilege escalation or data exposure. Token and lock directories are 0770 (group-writable for token users), so any token-group member can plant files and symlinks inside them. When run as root, the base code handling token directory file access, as well as several openCryptoki tools used for administrative purposes, may reset ownership or permissions on existing files inside the token directories. An attacker with token-group membership can exploit the system when an administrator runs a PKCS#11 application or administrative tool that performs chown on files inside the token directory during normal maintenance. This issue is fixed in commit 5e6e4b4, but has not been included in a released version at the time of publication. (CVE-2026-23893)

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

Solution

Update the CentOS 9 Stream opencryptoki package.

See Also

https://kojihub.stream.centos.org/koji/buildinfo?buildID=97217

Plugin Details

Severity: Medium

ID: 299200

File Name: centos9_opencryptoki-3_26_0-2_97217.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/16/2026

Updated: 2/16/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-23893

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:centos:centos:9, p-cpe:/a:centos:centos:opencryptoki-libs, p-cpe:/a:centos:centos:opencryptoki-devel, p-cpe:/a:centos:centos:opencryptoki-ccatok, p-cpe:/a:centos:centos:opencryptoki-icsftok, p-cpe:/a:centos:centos:opencryptoki-ep11tok, p-cpe:/a:centos:centos:opencryptoki-icatok, p-cpe:/a:centos:centos:opencryptoki, p-cpe:/a:centos:centos:opencryptoki-swtok

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 2/13/2026

Vulnerability Publication Date: 1/22/2026

Reference Information

CVE: CVE-2026-23893