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CentOS 8 : avahi (CESA-2023:7836)

medium Nessus Plugin ID 187732

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2023:7836 advisory.

 - 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-2021-3468)

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

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

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

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

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

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.

See Also

https://access.redhat.com/errata/RHSA-2023:7836

Plugin Details

Severity: Medium

ID: 187732

File Name: centos8_RHSA-2023-7836.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/9/2024

Updated: 2/8/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

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: 4.8

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:U/RL:O/RC:C

CVSS Score Source: CVE-2023-38473

Vulnerability Information

CPE: cpe:/o:centos:centos:8-stream, p-cpe:/a:centos:centos:avahi, p-cpe:/a:centos:centos:avahi-autoipd, p-cpe:/a:centos:centos:avahi-compat-howl, p-cpe:/a:centos:centos:avahi-compat-howl-devel, p-cpe:/a:centos:centos:avahi-compat-libdns_sd, p-cpe:/a:centos:centos:avahi-compat-libdns_sd-devel, p-cpe:/a:centos:centos:avahi-devel, p-cpe:/a:centos:centos:avahi-glib, p-cpe:/a:centos:centos:avahi-glib-devel, p-cpe:/a:centos:centos:avahi-gobject, p-cpe:/a:centos:centos:avahi-gobject-devel, p-cpe:/a:centos:centos:avahi-libs, p-cpe:/a:centos:centos:avahi-tools, p-cpe:/a:centos:centos:avahi-ui, p-cpe:/a:centos:centos:avahi-ui-devel, p-cpe:/a:centos:centos:avahi-ui-gtk3, p-cpe:/a:centos:centos:python3-avahi

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/14/2023

Vulnerability Publication Date: 6/2/2021

Reference Information

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

RHSA: 2023:7836