Detections
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Amazon Linux 2 : pacemaker (ALAS-2021-1583)

high Nessus Plugin ID 144796

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1583 advisory.

 - An ACL bypass flaw was found in pacemaker. An attacker having a local account on the cluster and in the haclient group could use IPC communication with various daemons directly to perform certain tasks that they would be prevented by ACLs from doing if they went through the configuration. (CVE-2020-25654)

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

Solution

Run 'yum update pacemaker' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2021-1583.html

https://access.redhat.com/security/cve/CVE-2020-25654

Plugin Details

Severity: High

ID: 144796

File Name: al2_ALAS-2021-1583.nasl

Version: 1.2

Type: local

Agent: unix

Published: 1/7/2021

Updated: 1/7/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2020-25654

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:pacemaker, p-cpe:/a:amazon:linux:pacemaker-cli, p-cpe:/a:amazon:linux:pacemaker-cluster-libs, p-cpe:/a:amazon:linux:pacemaker-cts, p-cpe:/a:amazon:linux:pacemaker-debuginfo, p-cpe:/a:amazon:linux:pacemaker-doc, p-cpe:/a:amazon:linux:pacemaker-libs, p-cpe:/a:amazon:linux:pacemaker-libs-devel, p-cpe:/a:amazon:linux:pacemaker-nagios-plugins-metadata, p-cpe:/a:amazon:linux:pacemaker-remote, cpe:/o:amazon:linux:2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/5/2021

Vulnerability Publication Date: 11/24/2020

Reference Information

CVE: CVE-2020-25654

ALAS: 2021-1583