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RHEL 7 : sudo (RHSA-2023:3276)

high Nessus Plugin ID 176250

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Synopsis

The remote Red Hat host is missing a security update for sudo.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:3276 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)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL sudo package based on the guidance in RHSA-2023:3276.

See Also

https://access.redhat.com/security/cve/CVE-2023-22809

https://access.redhat.com/errata/RHSA-2023:3276

Plugin Details

Severity: High

ID: 176250

File Name: redhat-RHSA-2023-3276.nasl

Version: 1.4

Type: local

Agent: unix

Published: 5/23/2023

Updated: 1/26/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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: 7.2

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:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_aus:7.7, cpe:/o:redhat:rhel_e4s:7.7, cpe:/o:redhat:rhel_tus:7.7, p-cpe:/a:redhat:enterprise_linux:sudo, p-cpe:/a:redhat:enterprise_linux:sudo-devel

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/23/2023

Vulnerability Publication Date: 1/18/2023

Exploitable With

Metasploit (Sudoedit Extra Arguments Priv Esc)

Reference Information

CVE: CVE-2023-22809

RHSA: 2023:3276