Amazon Linux 2 : pcs (ALAS-2022-1895)

critical Nessus Plugin ID 168451

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Synopsis

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

Description

The version of pcs installed on the remote host is prior to 0.9.169-3. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1895 advisory.

A denial of service flaw was found in ruby-rack. An attacker crafting multipart POST requests can cause Rack's multipart parser to take much longer than expected, leading to a denial of service.
(CVE-2022-30122)

A flaw was found in ruby gem-rack. This flaw allows a malicious actor to craft requests that can cause shell escape sequences to be written to the terminal via rack's `Lint` middleware and `CommonLogger` middleware. This issue can leverage these escape sequences to execute commands in the victim's terminal.
(CVE-2022-30123)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update pcs' to update your system.

Plugin Details

Severity: Critical

ID: 168451

File Name: al2_ALAS-2022-1895.nasl

Version: 1.4

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 12/7/2022

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.1

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2022-30123

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:pcs, p-cpe:/a:amazon:linux:pcs-snmp, p-cpe:/a:amazon:linux:pcs-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/1/2022

Vulnerability Publication Date: 11/2/2022

Reference Information

CVE: CVE-2022-30122, CVE-2022-30123

Detections

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