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openSUSE 16 Security Update : python-zeroconf (openSUSE-SU-2026:21175-1)

medium Nessus Plugin ID 324891

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Synopsis

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

Description

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21175-1 advisory.

 Changes in python-zeroconf:

 - CVE-2026-47180: zeroconf has unbounded recursion in DNS compression-pointer decoder that allows LAN-local denial of service (bsc#1268341)
 - CVE-2026-47183: zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion (bsc#1268342)
 - CVE-2026-47184: zeroconf has unbounded DNS record cache that allows LAN-local memory exhaustion via multicast flood (bsc#1268343)
 - CVE-2026-48045: python-zeroconf: Unbounded TC-deferred queue allows LAN-local memory exhaustion via spoofed-source flood (bsc#1268388)
 - CVE-2026-48487: python-zeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet (bsc#1268235)

Tenable has extracted the preceding description block directly from the SUSE 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 python313-zeroconf package.

See Also

https://bugzilla.suse.com/1268235

https://bugzilla.suse.com/1268341

https://bugzilla.suse.com/1268342

https://bugzilla.suse.com/1268343

https://bugzilla.suse.com/1268388

https://www.suse.com/security/cve/CVE-2026-47180

https://www.suse.com/security/cve/CVE-2026-47183

https://www.suse.com/security/cve/CVE-2026-47184

https://www.suse.com/security/cve/CVE-2026-48045

https://www.suse.com/security/cve/CVE-2026-48487

Plugin Details

Severity: Medium

ID: 324891

File Name: openSUSE-2026-21175-1.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 7/2/2026

Updated: 7/20/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2026-48487

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/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-2026-48045

CVSS v4

Risk Factor: Medium

Base Score: 5.3

Threat Score: 1.3

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:python313-zeroconf

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 5/29/2026

Reference Information

CVE: CVE-2026-47180, CVE-2026-47183, CVE-2026-47184, CVE-2026-48045, CVE-2026-48487