RHEL 9 : avahi (RHSA-2023:6707)

medium Nessus Plugin ID 185101

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Synopsis

The remote Red Hat host is missing one or more security updates for avahi.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:6707 advisory.

- avahi: Local DoS by event-busy-loop from writing long lines to /run/avahi-daemon/socket (CVE-2021-3468)

- avahi: reachable assertion in avahi_s_host_name_resolver_start when trying to resolve badly-formatted hostnames (CVE-2021-3502)

- avahi: avahi-daemon can be crashed via DBus (CVE-2023-1981)

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

Solution

Update the RHEL avahi package based on the guidance in RHSA-2023:6707.

Plugin Details

Severity: Medium

ID: 185101

File Name: redhat-RHSA-2023-6707.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/7/2023

Updated: 4/28/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-3502

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

CVSS Score Source: CVE-2023-1981

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:avahi, p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl, p-cpe:/a:redhat:enterprise_linux:avahi-compat-howl-devel, p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd, p-cpe:/a:redhat:enterprise_linux:avahi-compat-libdns_sd-devel, p-cpe:/a:redhat:enterprise_linux:avahi-devel, p-cpe:/a:redhat:enterprise_linux:avahi-glib, p-cpe:/a:redhat:enterprise_linux:avahi-glib-devel, p-cpe:/a:redhat:enterprise_linux:avahi-libs, p-cpe:/a:redhat:enterprise_linux:avahi-tools

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: 11/7/2023

Vulnerability Publication Date: 5/7/2021

Reference Information

CVE: CVE-2021-3468, CVE-2021-3502, CVE-2023-1981

CWE: 400, 476, 835

RHSA: 2023:6707

Detections

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