CVE-2023-27593— Cilium 安全漏洞
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一、 漏洞 CVE-2023-27593 基础信息
漏洞信息
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Vulnerability Title
cilium-agent container can access the host via `hostPath` mount
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
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.
来源: 美国国家漏洞数据库 NVD
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
缺省权限不正确
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
Cilium 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
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 1.11.14版本及之前版本、1.12.7版本及之前版本、1.13.0版本存在安全漏洞。攻击者利用该漏洞可以获得对底层节点的访问权限。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2023-27593 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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- https://github.com/cilium/cilium/pull/24075x_refsource_MISC
- https://github.com/cilium/cilium/releases/tag/v1.12.8x_refsource_MISC
- https://github.com/cilium/cilium/releases/tag/v1.13.1x_refsource_MISC
- https://github.com/cilium/cilium/releases/tag/v1.11.15x_refsource_MISC
- https://kubernetes.io/docs/reference/access-authn-authz/rbac/x_refsource_MISC
- https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrxx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2023-27593
同批安全公告 · cilium · 2023-03-17 · 共 3 条
| CVE-2023-27595 | 6.5 MEDIUM | Cilium 安全漏洞 |
| CVE-2023-27594 | 4.2 MEDIUM | Cilium 授权问题漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2023-27593
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