Podman: kernel: containers in shared ipc namespace are vulnerable to denial of service attack
Summary
Podman: kernel: containers in shared ipc namespace are vulnerable to denial of service attack
Original description
The description as published by the source.
A flaw was found in Podman. This issue may allow an attacker to create a specially crafted container that, when configured to share the same IPC with at least one other container, can create a large number of IPC resources in /dev/shm. The malicious container will continue to exhaust resources until it is out-of-memory (OOM) killed. While the malicious container's cgroup will be removed, the IPC resources it created are not. Those resources are tied to the IPC namespace that will not be removed until all containers using it are stopped, and one non-malicious container is holding the namespace open. The malicious container is restarted, either automatically or by attacker control, repeating the process and increasing the amount of memory consumed. With a container configured to restart always, such as podman run --restart=always, this can result in a memory-based denial of service of the system.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
References
- advisory access.redhat.com
- advisory github.com
- advisory nvd.nist.gov
- advisory security.netapp.com
- package github.com
- report bugzilla.redhat.com
- web access.redhat.com