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Amazon Linux 2 : sudo (ALAS-2023-1985)

high Nessus Plugin ID 172144

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Synopsis

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

Description

The version of sudo installed on the remote host is prior to 1.8.23-10. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-1985 advisory.

 In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user- provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR), allowing a local attacker to append arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a
 -- argument that defeats a protection mechanism, e.g., an EDITOR='vim -- /path/to/extra/file' value.
 (CVE-2023-22809)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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 sudo' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2023-1985.html

https://alas.aws.amazon.com/cve/html/CVE-2023-22809.html

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

Plugin Details

Severity: High

ID: 172144

File Name: al2_ALAS-2023-1985.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/7/2023

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

CVSS Score Source: CVE-2023-22809

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:sudo-debuginfo, p-cpe:/a:amazon:linux:sudo-devel, p-cpe:/a:amazon:linux:sudo

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: 3/2/2023

Vulnerability Publication Date: 1/18/2023

Exploitable With

Metasploit (Sudoedit Extra Arguments Priv Esc)

Reference Information

CVE: CVE-2023-22809