FreeBSD : ISC KEA -- Invalid characters cause assert (55c4e822-b4e4-11f0-8438-001b217e4ee5)

high Nessus Plugin ID 272041

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 55c4e822-b4e4-11f0-8438-001b217e4ee5 advisory.

Internet Systems Consortium, Inc. reports:
To trigger the issue, three configuration parameters must have specific settings: hostname-char-set must be left at the default setting, which is [^A-Za-z0-9.-];
hostname-char-replacement must be empty (the default);
and ddns-qualifying-suffix must NOT be empty (the default is empty).
DDNS updates do not need to be enabled for this issue to manifest.
A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly.
This addresses CVE-2025-11232 [#4142, #4155].

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 272041

File Name: freebsd_pkg_55c4e822b4e411f08438001b217e4ee5.nasl

Version: 1.1

Type: local

Family: FreeBSD Local Security Checks

Published: 10/30/2025

Updated: 10/30/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-11232

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:kea, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:kea-devel

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 10/29/2025

Vulnerability Publication Date: 10/29/2025

Reference Information

CVE: CVE-2025-11232

Detections

Analytics