Alibaba Cloud Linux 3 : 0035: avahi (ALINUX3-SA-2024:0035)

medium Nessus Plugin ID 236183

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0035 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2021-3468:
A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.

CVE-2023-1981:
A vulnerability was found in the avahi library. This flaw allows an unprivileged user to make a dbus call, causing the avahi daemon to crash.

CVE-2023-38469:
A vulnerability was found in Avahi, where a reachable assertion exists in avahi_dns_packet_append_record.

CVE-2023-38470:
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_escape_label() function.

CVE-2023-38471:
A vulnerability was found in Avahi. A reachable assertion exists in the dbus_set_host_name function.

CVE-2023-38472:
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_rdata_parse() function.

CVE-2023-38473:
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

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 affected packages.

Plugin Details

Severity: Medium

ID: 236183

File Name: alinux3_sa_2024-0035.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: 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-2021-3468

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-2023-38473

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-tools, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-dnsconfd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-compat-libdns_sd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-ui-gtk3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-ui-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-compat-howl, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-dnsconfd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-glib, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-glib-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-ui-gtk3-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-autoipd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-avahi, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-compat-libdns_sd-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-autoipd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-compat-howl-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-compat-howl-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-gobject-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-ui-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-doc, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-tools-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-gobject, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-compat-libdns_sd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-gobject-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-ui, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:avahi-glib-debuginfo

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/10/2024

Vulnerability Publication Date: 6/2/2021

Reference Information

CVE: CVE-2021-3468, CVE-2023-1981, CVE-2023-38469, CVE-2023-38470, CVE-2023-38471, CVE-2023-38472, CVE-2023-38473

Detections

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