CVE-2024-42486 Cilium vulnerable to information leakage via incorrect ReferenceGrant update logic in Gateway API

2024-08-1614:34:41

CWE-200

GitHub_M

www.cve.org

cilium

gatewayapi

information leakage

security

vulnerability

ebpf-based

dataplane

patch

workaround

CVSS3

5.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS

Percentile

16.3%

JSON

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In versions on the 1.15.x branch prior to 1.15.8 and the 1.16.x branch prior to 1.16.1, ReferenceGrant changes are not correctly propagated in Cilium’s GatewayAPI controller, which could lead to Gateway resources being able to access secrets for longer than intended, or to Routes having the ability to forward traffic to backends in other namespaces for longer than intended. This issue has been patched in Cilium v1.15.8 and v1.16.1. As a workaround, any modification of a related Gateway/HTTPRoute/GRPCRoute/TCPRoute CRD (for example, adding any label to any of these resources) will trigger a reconciliation of ReferenceGrants on an affected cluster.

CNA Affected

[
  {
    "vendor": "cilium",
    "product": "cilium",
    "versions": [
      {
        "version": "= 1.16.0",
        "status": "affected"
      },
      {
        "version": ">= 1.15.0, < 1.15.8",
        "status": "affected"
      }
    ]
  }
]