medium
6.5
CWE
400
Advisory Published
CVE Published
Updated

CVE-2023-34969

First published: Wed Jun 07 2023(Updated: )

An assertion failure in dbus-daemon when a privileged Monitoring connection (dbus-monitor, busctl monitor, gdbus monitor or similar) is active, and a message from the bus driver cannot be delivered to a client connection due to &lt;deny&gt; rules or outgoing message quota. This is a denial of service if triggered maliciously by a local attacker In other words, 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. Vulnerable versions: 1.15.x before 1.15.6 1.14.x before 1.14.8 1.12.x before 1.12.28 most end-of-life versions since 1.9.x Fixed versions: all since 1.15.6 1.14.x since 1.14.8 1.12.x since 1.12.28 Not vulnerable: end-of-life versions 1.8.x or older do not contain the affected code path. <a href="https://gitlab.freedesktop.org/dbus/dbus/-/issues/457">https://gitlab.freedesktop.org/dbus/dbus/-/issues/457</a> <a href="https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1908636.html">https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1908636.html</a>

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Freedesktop Dbus>=1.12.0<1.12.28
Freedesktop Dbus>=1.14.0<1.14.8
Freedesktop Dbus>=1.15.0<1.15.6
Fedoraproject Fedora=38
Debian Debian Linux=10.0
D-bus Project D-bus>=1.12.0<1.12.28
D-bus Project D-bus>=1.14.0<1.14.8
D-bus Project D-bus>=1.15.0<1.15.6
redhat/dbus<1.15.6
1.15.6
redhat/dbus<1.14.8
1.14.8
redhat/dbus<1.12.28
1.12.28
debian/dbus<=1.12.20-0+deb10u1<=1.12.24-0+deb11u1
1.12.28-0+deb10u1
1.12.28-0+deb11u1
1.14.10-1~deb12u1
1.14.10-4
ubuntu/dbus<1.10.6-1ubuntu3.6+
1.10.6-1ubuntu3.6+
ubuntu/dbus<1.12.28<1.14.8<1.15.6
1.12.28
1.14.8
1.15.6

Remedy

https://gitlab.freedesktop.org/dbus/dbus/-/issues/457

Remedy

https://gitlab.freedesktop.org/dbus/dbus/-/merge_requests/408

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-34969?

    CVE-2023-34969 is a vulnerability in D-Bus that allows unprivileged users to crash dbus-daemon when a privileged user with control over the dbus-daemon is monitoring message bus traffic.

  • How does CVE-2023-34969 affect D-Bus?

    CVE-2023-34969 affects D-Bus versions prior to 1.15.6, 1.14.8, and 1.12.28 on Red Hat systems, and versions prior to 1.10.6-1ubuntu3.6+ on Ubuntu systems.

  • What is the severity of CVE-2023-34969?

    CVE-2023-34969 has a severity rating of medium.

  • How can I fix CVE-2023-34969?

    To fix CVE-2023-34969, update D-Bus to version 1.15.6 or the recommended versions specific to your operating system.

  • Where can I find more information about CVE-2023-34969?

    You can find more information about CVE-2023-34969 on the MITRE CVE website, Ubuntu Security Notices, and the NIST NVD website.

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