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Amazon Linux 2022 : (ALAS2022-2022-097)

medium Nessus Plugin ID 164721

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Synopsis

The remote Amazon Linux 2022 host is missing a security update.

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2022-2022-097 advisory.

 - There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned (CVE-2021-4115)

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

Solution

Run 'dnf update --releasever=2022.0.20220628 polkit' to update your system.

See Also

https://alas.aws.amazon.com/AL2022/ALAS-2022-097.html

https://alas.aws.amazon.com/cve/html/CVE-2021-4115.html

Plugin Details

Severity: Medium

ID: 164721

File Name: al2022_ALAS2022-2022-097.nasl

Version: 1.3

Type: local

Agent: unix

Published: 9/6/2022

Updated: 10/12/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-4115

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:polkit, p-cpe:/a:amazon:linux:polkit-debugsource, p-cpe:/a:amazon:linux:polkit-docs, p-cpe:/a:amazon:linux:polkit-libs, cpe:/o:amazon:linux:2022, p-cpe:/a:amazon:linux:polkit-libs-debuginfo, p-cpe:/a:amazon:linux:polkit-debuginfo, p-cpe:/a:amazon:linux:polkit-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/28/2022

Vulnerability Publication Date: 2/3/2022

Reference Information

CVE: CVE-2021-4115

IAVA: 2022-A-0055