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Amazon Linux 2 : gzip, xz (ALAS-2022-1782)

high Nessus Plugin ID 160262

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Synopsis

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

Description

The version of gzip installed on the remote host is prior to 1.5-10. The version of xz installed on the remote host is prior to 5.2.2-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2022-1782 advisory.

 - An arbitrary file write vulnerability was found in GNU gzip's zgrep utility. When zgrep is applied on the attacker's chosen file name (for example, a crafted file name), this can overwrite an attacker's content to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing filenames with two or more newlines where selected content and the target file names are embedded in crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write arbitrary files on the system. (CVE-2022-1271)

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 gzip' to update your system.
 Run 'yum update xz' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2022-1782.html

https://alas.aws.amazon.com/cve/html/CVE-2022-1271.html

Plugin Details

Severity: High

ID: 160262

File Name: al2_ALAS-2022-1782.nasl

Version: 1.6

Type: local

Agent: unix

Published: 4/27/2022

Updated: 6/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2022-1271

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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:gzip-debuginfo, p-cpe:/a:amazon:linux:gzip, p-cpe:/a:amazon:linux:xz, p-cpe:/a:amazon:linux:xz-debuginfo, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:xz-compat-libs, p-cpe:/a:amazon:linux:xz-devel, p-cpe:/a:amazon:linux:xz-libs, p-cpe:/a:amazon:linux:xz-lzma-compat

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/25/2022

Vulnerability Publication Date: 4/19/2022

Reference Information

CVE: CVE-2022-1271

ALAS: 2022-1782

IAVA: 2024-A-0327