CVE-2023-41333

Katalog CVE

CVSS 8.1 · High EPSS 0,48%

Kerentanan Missing Authentication for Critical Function pada cilium. Skor CVSS 3.1 8.1 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

27 September 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.1 (High), sumber NVD
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-306: Missing Authentication for Critical Function

EPSS (30 hari)

0,48% peluang dieksploitasi; lebih tinggi dari 39,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/cilium/cilium/pull/28007 issue tracking · patch
• https://github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx mitigasi · patch · advisory pihak ketiga
• https://docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker product