CVE-2023-34969 Denial of service in n/a

What is CVE-2023-34969?

CVE-2023-34969 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 8 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-404

Which versions are affected by CVE-2023-34969?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Freedesktop Dbus.

How do I fix CVE-2023-34969?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-34969 being exploited?

There is no known exploitation of CVE-2023-34969 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALSA-2023:4498, ALSA-2023:4569, AZL-27178, DEBIAN-CVE-2023-34969, DLA-3628-1, GHSA-q652-p9gf-vfq3 and 13 more.