CVE-2024-42487 Cilium's Gateway API route matching order contradicts specification

2024-08-1520:26:53

CWE-113

GitHub_M

www.cve.org

cilium

gateway api

route matching

order

contradiction

specification

httproutes

grpcroutes

match precedence

request headers

request methods

security issue

fix

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

Percentile

16.3%

JSON

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. In the 1.15 branch prior to 1.15.8 and the 1.16 branch prior to 1.16.1, Gateway API HTTPRoutes and GRPCRoutes do not follow the match precedence specified in the Gateway API specification. In particular, request headers are matched before request methods, when the specification describes that the request methods must be respected before headers are matched. This could result in unexpected behaviour with security This issue is fixed in Cilium v1.15.8 and v1.16.1. There is no workaround for this issue.

CNA Affected

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