RHEL 8 : trousers (RHSA-2021:1627)

high Nessus Plugin ID 149697

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1627 advisory.

TrouSerS is an implementation of the Trusted Computing Group's Software Stack (TSS) specification.
TrouSerS enables the user to write applications that make use of the Trusted Platform Module (TPM) hardware.

The following packages have been upgraded to a later upstream version: trousers (0.3.15). (BZ#1725782)

Security Fix(es):

* trousers: tss user still has read and write access to the /etc/tcsd.conf file if tcsd is started as root (CVE-2020-24331)

* trousers: tss user can be used to create or corrupt existing files, this could lead to DoS (CVE-2020-24332)

* trousers: fails to drop the root gid privilege when no longer needed (CVE-2020-24330)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the affected trousers, trousers-devel and / or trousers-lib packages.

Plugin Details

Severity: High

ID: 149697

File Name: redhat-RHSA-2021-1627.nasl

Version: 1.11

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/19/2021

Updated: 11/7/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2020-24331

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:trousers-lib, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:trousers-devel, p-cpe:/a:redhat:enterprise_linux:trousers

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/18/2021

Vulnerability Publication Date: 8/13/2020

Reference Information

CVE: CVE-2020-24330, CVE-2020-24331, CVE-2020-24332

CWE: 22, 271

IAVA: 2020-A-0453

RHSA: 2021:1627

Detections

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