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Runc vulnerability CVE-2024-21626 allowing container escape in all Docker and Kubernetes environments

Docker Security Advisory: Multiple Vulnerabilities in runc, BuildKit, and Moby

https://www.docker.com/blog/docker-security-advisory-multiple-vulnerabilities-in-runc-buildkit-and-moby/

Docker security advisory about multiple vulnerabilities in runc, BuildKit, and Moby: We will publish patched versions of runc, BuildKit, and Moby on January 31 and release an update for Docker Desktop on February 1 to address these vulnerabilities.  Additionally, our latest Moby and BuildKit releases will include fixes for CVE-2024-23650 and CVE-2024-24557, discovered respectively by an independent researcher and through Docker’s internal research initiatives.

Seems like a really serious vulnerability, any container attack or malicious image could take over a container host if there's no hardening on the containers.

3 comments

mumblerfish

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What are runc, buildkit, moby and docker desktop? Are these tools part of a normal docker setup on linux?

jlh

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Yes, the runc vulnerability affects both docker cli and podman cli.

Docker and Kubernetes use containerd, and Podman uses runc directly.

https://github.com/containerd/containerd/pull/9724

https://github.com/containers/podman/pull/21483

Do not run any untrusted images until the vulnerability is fixed, especially not as root.

honey_mesquite

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Docker Desktop won't really affect you as a Linux user, but moby/buildkit serves as the basis for "docker build" when building docker images. Runc is one of the base packages used for the software and so this will affect nearly all users of Docker until it gets resolved.

catherine

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good

catherine

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The Runc vulnerability CVE-2024-21626 poses a risk of container escape in all Docker and Kubernetes environments. dish cable and internet packages This vulnerability could potentially allow malicious actors to break out of containers and access sensitive system resources, highlighting the importance of prompt patching and security measures in containerized environments.