Medium · published June 8, 2023
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.
| Product | Versions | Fixed in |
|---|---|---|
| freedesktop/dbus | ≥ 1.12.0, < 1.12.28 | 1.12.28 |
| freedesktop/dbus | ≥ 1.14.0, < 1.14.8 | 1.14.8 |
| freedesktop/dbus | ≥ 1.15.0, < 1.15.6 | 1.15.6 |
| fedoraproject/fedora | all versions | — |
| debian/debian_linux | all versions | — |