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CVE-2025-30163

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Date: March 24, 2025

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Node based network policies ("fromNodes" and "toNodes") will incorrectly permit traffic to/from non-node endpoints that share the labels specified in "fromNodes" and "toNodes" sections of network policies. Node based network policy is disabled by default in Cilium. This issue affects: Cilium v1.16 between v1.16.0 and v1.16.7 inclusive and v1.17 between v1.17.0 and v1.17.1 inclusive. This issue is fixed in Cilium v1.16.8 and v1.17.2. Users can work around this issue by ensuring that the labels used in "fromNodes" and "toNodes" fields are used exclusively by nodes and not by other endpoints.

Severity Score

Severity Score

Weakness Type (CWE)

Incorrect Authorization

CWE-863

Top Fix

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Upgrade Version

Upgrade to version github.com/cilium/cilium - v1.16.8;https://github.com/cilium/cilium.git - v1.16.8;https://github.com/cilium/cilium.git - v1.17.2

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CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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