---
id: CVE-2023-34969
title: D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon
summary: >-
  D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon.
  If a privileged user with control over the dbus-daemon is using the
  org.freedesktop.DBus.Monitoring interface to monitor message bus traffic, then
  an unprivile…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-404
vendor: freedesktop
product: dbus
affected:
  - 'dbus >= 1.12.0, < 1.12.28'
  - 'dbus >= 1.14.0, < 1.14.8'
  - 'dbus >= 1.15.0, < 1.15.6'
  - fedora = 38
  - debian_linux = 10.0
patched:
  - dbus 1.15.6
published: '2023-06-08'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T00:16:33.183'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-34969'
references:
  - url: 'https://gitlab.freedesktop.org/dbus/dbus/-/issues/457'
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2023/10/msg00033.html'
    label: cve@mitre.org
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZYCDRMD7B4XO4HF6C6YTLH4YUD7TANP/
    label: cve@mitre.org
  - url: 'https://security.netapp.com/advisory/ntap-20231208-0007/'
    label: cve@mitre.org
  - url: 'https://gitlab.freedesktop.org/dbus/dbus/-/issues/457'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2023/10/msg00033.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZYCDRMD7B4XO4HF6C6YTLH4YUD7TANP/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20231208-0007/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-806742.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.01405
epssPercentile: 0.72041
ingestedAt: '2026-10-15T01:08:04.202Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2023-12-11T19:00:29.894117Z'
---

## Overview

D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon. If a privileged user with control over the dbus-daemon is using the org.freedesktop.DBus.Monitoring interface to monitor message bus traffic, then an unprivileged user with the ability to connect to the same dbus-daemon can cause a dbus-daemon crash under some circumstances via an unreplyable message. When done on the well-known system bus, this is a denial-of-service vulnerability. The fixed versions are 1.12.28, 1.14.8, and 1.15.6.

## Affected

- `dbus >= 1.12.0, < 1.12.28`
- `dbus >= 1.14.0, < 1.14.8`
- `dbus >= 1.15.0, < 1.15.6`
- `fedora = 38`
- `debian_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `dbus 1.15.6`