A bug was found in containerd where containers launched through containerd’s CRI implementation with a specially-crafted image configuration could gain access to read-only copies of arbitrary files and directories on the host. This may bypass any policy-based enforcement on container setup (including a Kubernetes Pod Security Policy) and expose potentially sensitive information. Kubernetes and crictl can both be configured to use containerd’s CRI implementation.
This bug has been fixed in containerd 1.6.1, 1.5.10 and 1.4.13. Users should update to these versions to resolve the issue.
Ensure that only trusted images are used.
The containerd project would like to thank Felix Wilhelm of Google Project Zero for responsibly disclosing this issue in accordance with the containerd security policy.
If you have any questions or comments about this advisory:
packetstormsecurity.com/files/166421/containerd-Image-Volume-Insecure-Handling.html
github.com/containerd/containerd
github.com/containerd/containerd/commit/10f428dac7cec44c864e1b830a4623af27a9fc70
github.com/containerd/containerd/releases/tag/v1.4.13
github.com/containerd/containerd/releases/tag/v1.5.10
github.com/containerd/containerd/releases/tag/v1.6.1
github.com/containerd/containerd/security/advisories/GHSA-crp2-qrr5-8pq7
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUDQUQBZJGBWJPMRVB6QCCCRF7O3O4PA
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFTS2EF3S7HNYSNZSEJZIJHPRU7OPUV3
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OCCARJ6FU4MWBTXHZNMS7NELPDBIX2VO
lists.fedoraproject.org/archives/list/[email protected]/message/AUDQUQBZJGBWJPMRVB6QCCCRF7O3O4PA
lists.fedoraproject.org/archives/list/[email protected]/message/HFTS2EF3S7HNYSNZSEJZIJHPRU7OPUV3
lists.fedoraproject.org/archives/list/[email protected]/message/OCCARJ6FU4MWBTXHZNMS7NELPDBIX2VO
nvd.nist.gov/vuln/detail/CVE-2022-23648
security.gentoo.org/glsa/202401-31
www.debian.org/security/2022/dsa-5091