EulerOS 2.0 SP13 : avahi (EulerOS-SA-2026-2321)

medium Nessus Plugin ID 320233

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the avahi packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version 0.9-rc4.(CVE-2026-34933)

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name point to the same domain (e.g., 'h.local' as a CNAME for 'h.local'). This causes unbounded recursion in the lookup_handle_cname function, leading to stack exhaustion. The vulnerability affects record browsers where AVAHI_LOOKUP_USE_MULTICAST is set explicitly, which includes record browsers created by resolvers used by nss-mdns. This issue is patched in commit 78eab31128479f06e30beb8c1cbf99dd921e2524.(CVE-2026-24401)

Tenable has extracted the preceding description block directly from the EulerOS avahi 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 avahi packages.

Plugin Details

Severity: Medium

ID: 320233

File Name: EulerOS_SA-2026-2321.nasl

Version: 1.1

Type: Local

Family: Huawei Local Security Checks

Published: 6/10/2026

Updated: 6/10/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-24401

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:avahi-devel, p-cpe:/a:huawei:euleros:avahi, p-cpe:/a:huawei:euleros:avahi-glib, p-cpe:/a:huawei:euleros:avahi-libs, p-cpe:/a:huawei:euleros:avahi-help, cpe:/o:huawei:euleros:2.0

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

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/10/2026

Vulnerability Publication Date: 1/24/2026

Reference Information

CVE: CVE-2026-24401, CVE-2026-34933

Detections

Analytics