CVE-2019-11248 Kubernetes kubelet exposes /debug/pprof info on healthz port

2019-08-0600:00:00

CWE-419

kubernetes

www.cve.org

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

7.9 High

AI Score

Confidence

High

0.601 Medium

EPSS

Percentile

97.8%

JSON

The debugging endpoint /debug/pprof is exposed over the unauthenticated Kubelet healthz port. The go pprof endpoint is exposed over the Kubelet’s healthz port. This debugging endpoint can potentially leak sensitive information such as internal Kubelet memory addresses and configuration, or for limited denial of service. Versions prior to 1.15.0, 1.14.4, 1.13.8, and 1.12.10 are affected. The issue is of medium severity, but not exposed by the default configuration.

CNA Affected

[
  {
    "product": "Kubernetes",
    "vendor": "Kubernetes",
    "versions": [
      {
        "status": "affected",
        "version": "prior to 1.12.10"
      },
      {
        "status": "affected",
        "version": "prior to 1.13.8"
      },
      {
        "status": "affected",
        "version": "prior to 1.14.4"
      },
      {
        "status": "affected",
        "version": "1.1"
      },
      {
        "status": "affected",
        "version": "1.2"
      },
      {
        "status": "affected",
        "version": "1.4"
      },
      {
        "status": "affected",
        "version": "1.5"
      },
      {
        "status": "affected",
        "version": "1.6"
      },
      {
        "status": "affected",
        "version": "1.7"
      },
      {
        "status": "affected",
        "version": "1.8"
      },
      {
        "status": "affected",
        "version": "1.9"
      },
      {
        "status": "affected",
        "version": "1.10"
      },
      {
        "status": "affected",
        "version": "1.11"
      }
    ]
  }
]