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Amazon Linux 2 : cloud-init (ALAS-2021-1620)

medium Nessus Plugin ID 147907

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Synopsis

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

Description

The version of cloud-init installed on the remote host is prior to 19.3-43. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1620 advisory.

 - A vulnerability was discovered in cloud-init which can improperly disclose randomly generated passwords as part of the chpasswd module. The fix prevents the generated password from being written to a world- readable log file on the local disk. (CVE-2021-3429)

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 cloud-init' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2021-1620.html

https://access.redhat.com/security/cve/CVE-2021-3429

Plugin Details

Severity: Medium

ID: 147907

File Name: al2_ALAS-2021-1620.nasl

Version: 1.3

Type: local

Agent: unix

Published: 3/19/2021

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-3429

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:cloud-init, 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: 3/18/2021

Vulnerability Publication Date: 3/18/2021

Reference Information

CVE: CVE-2021-3429

ALAS: 2021-1620