FreeBSD : NetBird -- Local Privilege Escalation via Unauthenticated IPC Socket (ef71114e-8c1c-11f1-a221-3c7c3fba4204)

high Nessus Plugin ID 331320

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 ef71114e-8c1c-11f1-a221-3c7c3fba4204 advisory.

The NetBird Team reports:
The NetBird client daemon exposes its gRPC control interface to any local process with no authentication, in all versions from 0.5.0 (March 2022) to 0.75.1. On Linux, macOS and FreeBSD the interface is a Unix domain socket (/var/run/netbird.sock) with world-readable/writable permissions (0666). On Windows it is a loopback TCP listener (127.0.0.1:41731), where the transport carries no caller identity at all. Any unprivileged local user can connect and invoke all daemon RPCs without credentials.

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: 331320

File Name: freebsd_pkg_ef71114e8c1c11f1a2213c7c3fba4204.nasl

Version: 1.1

Type: Local

Family: FreeBSD Local Security Checks

Published: 7/31/2026

Updated: 7/31/2026

Supported Sensors: Nessus

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:netbird

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2026

Vulnerability Publication Date: 7/29/2026

Detections

Analytics