Vulnerability Information
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Vulnerability Title
Bypass of namespace restrictions in CiliumNetworkPolicy
Vulnerability Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in other namespaces. By using a crafted `endpointSelector` that uses the `DoesNotExist` operator on the `reserved:init` label, the attacker can create policies that bypass namespace restrictions and affect the entire Cilium cluster. This includes potentially allowing or denying all traffic. This attack requires API server access, as described in the Kubernetes API Server Attacker section of the Cilium Threat Model. This issue has been resolved in Cilium versions 1.14.2, 1.13.7, and 1.12.14. As a workaround an admission webhook can be used to prevent the use of `endpointSelectors` that use the `DoesNotExist` operator on the `reserved:init` label in CiliumNetworkPolicies.
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:H
Vulnerability Type
关键功能的认证机制缺失
Vulnerability Title
Cilium 访问控制错误漏洞
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存在访问控制错误漏洞，该漏洞源于允许攻击者绕过CiliumNetworkPolicy中的命名空间限制。受影响的产品和版本：Cilium 1.14.1及之前版本，1.12.13及之前版本，1.13.6及之前版本。
CVSS Information
N/A
Vulnerability Type
N/A