ABB M2M Gateway Use-After-Free in embedded Systemd (CVE-2022-2526)

critical Tenable OT Security Plugin ID 503254

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in 'resolved-dns-stream.c' not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: Critical

ID: 503254

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 5/27/2025

Updated: 5/27/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: cpe:/o:abb:sw_firmware, cpe:/o:abb:arm600_firmware

Required KB Items: Tenable.ot/ABB

Exploit Ease: No known exploits are available

Patch Publication Date: 9/9/2022

Vulnerability Publication Date: 9/9/2022

Reference Information

CVE: CVE-2022-2526

CWE: 416

ICSA: 25-105-08

Detections

Analytics