CVE-2025-23028
DoS in Cilium agent DNS proxy from crafted DNS responses
描述
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. A denial of service vulnerability affects versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4. In a Kubernetes cluster where Cilium is configured to proxy DNS traffic, an attacker can crash Cilium agents by sending a crafted DNS response to workloads from outside the cluster. For traffic that is allowed but without using DNS-based policy, the dataplane will continue to pass traffic as configured at the time of the DoS. For workloads that have DNS-based policy configured, existing connections may continue to operate, and new connections made without relying on DNS resolution may continue to be established, but new connections which rely on DNS resolution may be disrupted. Any configuration changes that affect the impacted agent may not be applied until the agent is able to restart. This issue is fixed in Cilium v1.14.18, v1.15.12, and v1.16.5. No known workarounds are available.
如何修補 CVE-2025-23028
要修補 CVE-2025-23028,請將受影響套件升級到下列已修補版本。
- —升級至 1.16.5 或更新版本
- —升級至 1.16.5 或更新版本
- —升級至 1.16.5 或更新版本
- —升級至 1.14.18 或更新版本
- —升級至 1.14.18 或更新版本
CVE-2025-23028 正在被利用嗎?
低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。
受影響套件(5)
- >= 1.15.4, < 1.16.5
- >= 1.15.4, < 1.16.5
- >= 1.14.0, < 1.16.5
- >= 1.14.0, < 1.14.18
- >= 1.14.0, < 1.14.18, >= 1.15.0, < 1.15.12, >= 1.16.0, < 1.16.5
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |