CVE-2023-27595
Cilium eBPF filters may be temporarily removed during agent restart
描述
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In version 1.13.0, when Cilium is started, there is a short period when Cilium eBPF programs are not attached to the host. During this period, the host does not implement any of Cilium's featureset. This can cause disruption to newly established connections during this period due to the lack of Load Balancing, or can cause Network Policy bypass due to the lack of Network Policy enforcement during the window. This vulnerability impacts any Cilium-managed endpoints on the node (such as Kubernetes Pods), as well as the host network namespace (including Host Firewall). This vulnerability is fixed in Cilium 1.13.1 or later. Cilium releases 1.12.x, 1.11.x, and earlier are not affected. There are no known workarounds.
如何修補 CVE-2023-27595
要修補 CVE-2023-27595,請將受影響套件升級到下列已修補版本。
- —升級至 1.13.1 或更新版本
- —升級至 1.13.1 或更新版本
- —未列出修補版本
- —未列出修補版本
- —升級至 1.13.1 或更新版本
- —未列出修補版本
- —未列出修補版本
- —升級至 1.13.1 或更新版本
- —升級至 1.13.1 或更新版本
CVE-2023-27595 正在被利用嗎?
低 — EPSS 為 0.7%,目前沒有觀察到大規模利用活動。
受影響套件(9)
- >= 1.13.0, < 1.13.1
- >= 1.13.0, < 1.13.1
- >= 1.13.0, <= 1.13.0
- >= 1.13.0, <= 1.13.0
- >= 1.13.0, < 1.13.1
- >= 1.13.0, <= 1.13.0
- >= 1.13.0, <= 1.13.0
- >= 1.13.0, < 1.13.1
- >= 1.13.0, < 1.13.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L |