Detections
Analytics

Amazon Linux 2 : libarchive (ALAS-2023-2374)

high Nessus Plugin ID 186549

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Synopsis

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

Description

The version of libarchive installed on the remote host is prior to 3.1.2-14. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2374 advisory.

 - An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system. (CVE-2021-31566)

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 libarchive' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2023-2374.html

https://alas.aws.amazon.com/cve/html/CVE-2021-31566.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: High

ID: 186549

File Name: al2_ALAS-2023-2374.nasl

Version: 1.0

Type: local

Agent: unix

Published: 12/4/2023

Updated: 12/4/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-31566

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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:bsdcpio, p-cpe:/a:amazon:linux:bsdtar, p-cpe:/a:amazon:linux:libarchive, p-cpe:/a:amazon:linux:libarchive-debuginfo, p-cpe:/a:amazon:linux:libarchive-devel, 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: 11/29/2023

Vulnerability Publication Date: 3/15/2022

Reference Information

CVE: CVE-2021-31566