7.3

CVE-2023-27594

Cilium vulnerable to potential network policy bypass when routing IPv6 traffic 

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cilium ≫ Cilium Version < 1.11.15
Cilium ≫ Cilium Version >= 1.12.0 < 1.12.8
Cilium ≫ Cilium Version >= 1.13.0 < 1.13.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.55% 0.417
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.3 3.9 3.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
security-advisories@github.com 4.2 1.6 2.5
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-285 Improper Authorization

The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://github.com/cilium/cilium/releases/tag/v1.11.15
Third Party Advisory
https://github.com/cilium/cilium/releases/tag/v1.12.8
Third Party Advisory
https://github.com/cilium/cilium/releases/tag/v1.13.1
Third Party Advisory
https://github.com/cilium/cilium/security/advisories/GHSA-8fg8-jh2h-f2hc
Third Party Advisory