What’s Vulnerable › Vulnerabilities

CVE-2023-34969

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-08 · updated 2026-10-15
• Weakness: CWE-404

Description

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 products

• Debian Linux: 10.0
• Fedoraproject Fedora: 38
• Freedesktop Dbus: from 1.12.0 before 1.12.28; from 1.14.0 before 1.14.8; from 1.15.0 before 1.15.6 — fixed in 1.12.28, 1.14.8, 1.15.6

How to fix

Upgrade to a fixed version: Freedesktop Dbus 1.12.28, 1.14.8, 1.15.6. Check the vendor advisory for mitigations.

References

• https://gitlab.freedesktop.org/dbus/dbus/-/issues/457
• https://lists.debian.org/debian-lts-announce/2023/10/msg00033.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZYCDRMD7B4XO4HF6C6YTLH4YUD7TANP/
• https://security.netapp.com/advisory/ntap-20231208-0007/
• https://gitlab.freedesktop.org/dbus/dbus/-/issues/457
• https://lists.debian.org/debian-lts-announce/2023/10/msg00033.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZYCDRMD7B4XO4HF6C6YTLH4YUD7TANP/
• https://security.netapp.com/advisory/ntap-20231208-0007/
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html
• https://cert-portal.siemens.com/productcert/html/ssa-806742.html

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