CVE-2024-28250

Cilium has possible unencrypted traffic between nodes when using WireGuard and L7 policies

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Starting in version 1.14.0 and prior to versions 1.14.8 and 1.15.2, In Cilium clusters with WireGuard enabled and traffic matching Layer 7 policies Wireguard-eligible traffic that is sent between a node's Envoy proxy and pods on other nodes is sent unencrypted and Wireguard-eligible traffic that is sent between a node's DNS proxy and pods on other nodes is sent unencrypted. This issue has been resolved in Cilium 1.14.8 and 1.15.2 in in native routing mode (`routingMode=native`) and in Cilium 1.14.4 in tunneling mode (`routingMode=tunnel`). Not that in tunneling mode, `encryption.wireguard.encapsulate` must be set to `true`. There is no known workaround for this issue.

Cilium es una solución de redes, observabilidad y seguridad con un plano de datos basado en eBPF. A partir de la versión 1.14.0 y anteriores a las versiones 1.14.8 y 1.15.2, en los clústeres de Cilium con WireGuard habilitado y el tráfico que coincide con las políticas de Capa 7, el tráfico elegible para Wireguard que se envía entre el proxy Envoy de un nodo y los pods de otros nodos se envía sin cifrar. y el tráfico elegible para Wireguard que se envía entre el proxy DNS de un nodo y los pods de otros nodos se envía sin cifrar. Este problema se resolvió en Cilium 1.14.8 y 1.15.2 en modo de enrutamiento nativo (`routingMode=native`) y en Cilium 1.14.4 en modo de túnel (`routingMode=tunnel`). No es que en modo túnel, `encryption.wireguard.encapsulate` deba establecerse en `true`. No se conoce ningún workaround para este problema.

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Adjacent

Attack Complexity

High

Authentication

None

Confidentiality

Complete

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-03-07 CVE Reserved
2024-03-18 CVE Published
2024-08-02 CVE Updated
2025-01-10 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-311: Missing Encryption of Sensitive Data

CAPEC

References (4)

URL	Tag	Source
https://github.com/cilium/cilium/releases/tag/v1.13.13	X_refsource_misc
https://github.com/cilium/cilium/releases/tag/v1.14.8	X_refsource_misc
https://github.com/cilium/cilium/releases/tag/v1.15.2	X_refsource_misc
https://github.com/cilium/cilium/security/advisories/GHSA-v6q2-4qr3-5cw6	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cilium Search vendor "Cilium"		Cilium Search vendor "Cilium" for product "Cilium"				>= 1.14.0 < 1.14.8 Search vendor "Cilium" for product "Cilium" and version " >= 1.14.0 < 1.14.8"		en		Affected
Cilium Search vendor "Cilium"		Cilium Search vendor "Cilium" for product "Cilium"				>= 1.15.0 < 1.15.2 Search vendor "Cilium" for product "Cilium" and version " >= 1.15.0 < 1.15.2"		en		Affected