World-writable Permissions in Canonical Cloud-Init Installation

CVE-2024-11584

What is CVE-2024-11584?

The Canonical Cloud-Init version 25.1.2 contains a vulnerability related to the default permissions set for the systemd socket unit cloud-init-hotplugd.socket. These permissions, set to 0666, allow any user on the system to write to the socket, enabling unprivileged users to execute hotplug-hook commands through the insecure FIFO located at '/run/cloud-init/hook-hotplug-cmd'. This poses a risk of unauthorized access and potential exploitation, making it essential for users to apply the latest updates to mitigate this issue.

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References