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Amazon Linux 2023: CVE-2023-34969: Medium priority package update for dbus

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Amazon Linux 2023: CVE-2023-34969: Medium priority package update for dbus

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
06/06/2023
Created
02/14/2025
Added
02/14/2025
Modified
02/14/2025

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. An assertion failure vulnerability was found in D-Bus. This issue occurs 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 <deny> rules or outgoing message quota. If a privileged user with control over the dbus-daemon is monitoring the message bus traffic using the Monitoring clients like the dbus-monitor or busctl monitor interfaces, then an unprivileged local user with the ability to connect to the same dbus-daemon could send specially crafted request, causing a dbus-daemon to crash, resulting in a denial of service under some circumstances.

Solution(s)

  • amazon-linux-2023-upgrade-dbus
  • amazon-linux-2023-upgrade-dbus-common
  • amazon-linux-2023-upgrade-dbus-daemon
  • amazon-linux-2023-upgrade-dbus-daemon-debuginfo
  • amazon-linux-2023-upgrade-dbus-debuginfo
  • amazon-linux-2023-upgrade-dbus-debugsource
  • amazon-linux-2023-upgrade-dbus-devel
  • amazon-linux-2023-upgrade-dbus-doc
  • amazon-linux-2023-upgrade-dbus-libs
  • amazon-linux-2023-upgrade-dbus-libs-debuginfo
  • amazon-linux-2023-upgrade-dbus-tests
  • amazon-linux-2023-upgrade-dbus-tests-debuginfo
  • amazon-linux-2023-upgrade-dbus-tools
  • amazon-linux-2023-upgrade-dbus-tools-debuginfo
  • amazon-linux-2023-upgrade-dbus-x11
  • amazon-linux-2023-upgrade-dbus-x11-debuginfo

References

  • https://attackerkb.com/topics/cve-2023-34969
  • CVE - 2023-34969
  • https://alas.aws.amazon.com/AL2023/ALAS-2023-213.html
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