Incorrect Authorization Affecting cilium-1.14 package, versions <1.14.19-r23


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.55% (42nd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-CILIUM114-9509467
  • published22 Mar 2025
  • disclosed17 Mar 2023

Introduced: 17 Mar 2023

CVE-2023-27594  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Chainguard cilium-1.14 to version 1.14.19-r23 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cilium-1.14 package and not the cilium-1.14 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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, under specific conditions, Cilium may misattribute the source IP address of traffic to a cluster, identifying external traffic as coming from the host on which Cilium is running. As a consequence, network policies for that cluster might be bypassed, depending on the specific network policies enabled.

This issue only manifests when Cilium is routing IPv6 traffic and NodePorts are used to route traffic to pods. IPv6 and endpoint routes are both disabled by default.

The problem has been fixed and is available on versions 1.11.15, 1.12.8, and 1.13.1. As a workaround, disable IPv6 routing.

CVSS Base Scores

version 3.1