CVE-2023-27595— Cilium 安全漏洞
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I. CVE-2023-27595の基本情報
脆弱性情報
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脆弱性タイトル
Cilium eBPF filters may be temporarily removed during agent restart
ソース: NVD (National Vulnerability Database)
脆弱性説明
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.
ソース: NVD (National Vulnerability Database)
CVSS情報
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
对异常条件的处理不恰当
ソース: NVD (National Vulnerability Database)
脆弱性タイトル
Cilium 安全漏洞
ソース: CNNVD (China National Vulnerability Database)
脆弱性説明
Cilium是一个开源软件。用于提供和透明地保护应用程序工作负载（如应用程序容器或进程）之间的网络连接和负载平衡。 Cilium 1.13.0版本存在安全漏洞，该漏洞源于当Cilium启动时，有一小段时间Cilium eBPF程序没有附加到主机上。
ソース: CNNVD (China National Vulnerability Database)
CVSS情報
N/A
ソース: CNNVD (China National Vulnerability Database)
脆弱性タイプ
N/A
ソース: CNNVD (China National Vulnerability Database)
影響を受ける製品
II. CVE-2023-27595の公開POC
| # | POC説明 | ソースリンク | Shenlongリンク |
|---|
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- https://github.com/cilium/cilium/pull/24336x_refsource_MISC
- https://github.com/cilium/cilium/releases/tag/v1.13.1x_refsource_MISC
- https://github.com/cilium/cilium/security/advisories/GHSA-r5x6-w42p-jhppx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2023-27595
Same Patch Batch · cilium · 2023-03-17 · 3 CVEs total
| CVE-2023-27593 | 4.4 MEDIUM | cilium-agent container can access the host via `hostPath` mount |
| CVE-2023-27594 | 4.2 MEDIUM | Cilium vulnerable to potential network policy bypass when routing IPv6 traffic |
IV. 関連脆弱性
同じ製品: cilium
- CVE-2026-41520
Cillium exposes sensitive information included in the cilium - CVE-2026-33726
Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same - CVE-2026-26963
Cilium may not enforce host firewall policies when Native Ro - CVE-2025-64715
Cilium with misconfigured toGroups in policies can lead to u - CVE-2025-32793
Cilium packets from terminating endpoints may not be encrypt
同じベンダー: cilium
- CVE-2026-41520
Cillium exposes sensitive information included in the cilium - CVE-2026-33726
Cilium L7 proxy may bypass Kubernetes NetworkPolicy for same - CVE-2026-26963
Cilium may not enforce host firewall policies when Native Ro - CVE-2025-64715
Cilium with misconfigured toGroups in policies can lead to u - CVE-2025-48056
Hubble CLI vulnerable to character injection
同じ弱点: CWE-755
- CVE-2026-23666
.NET Framework Denial of Service Vulnerability - CVE-2026-40074
SvelteKit's invalidated redirect in handle hook causes Denia - CVE-2026-28542
Huawei EMUI和Huawei HarmonyOS 安全漏洞 - CVE-2026-27195
Wasmtime is vulnerable to panic when dropping a `[Typed]Func - CVE-2026-27586
Caddy's mTLS client authentication silently fails open when
V. CVE-2023-27595へのコメント
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