cilium-agent container can access the host via `hostPath` mount
概要
cilium-agent container can access the host via hostPath mount
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, an attacker with access to a Cilium agent pod can write to /opt/cni/bin due to a hostPath mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node.
The issue has been fixed and the fix is available on versions 1.11.15, 1.12.8, and 1.13.1. Some workarounds are available. Kubernetes RBAC should be used to deny users and service accounts exec access to Cilium agent pods. In cases where a user requires exec access to Cilium agent pods, but should not have access to the underlying node, no workaround is possible.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
影響パッケージ
参照URL
- advisory github.com
- advisory github.com
- advisory github.com
- advisory github.com
- advisory github.com
- advisory kubernetes.io
- package github.com
- web nvd.nist.gov
- web kubernetes.io