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CVE-2019-11253

HIGH
Published 2019-10-17T15:40:10.154574Z
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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.398
probability
of exploitation in the wild

There is a 39.8% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.971
Higher than 97.1% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloads, causing the API server to consume excessive CPU or memory, potentially crashing and becoming unavailable. Prior to v1.14.0, default RBAC policy authorized anonymous users to submit requests that could trigger this vulnerability. Clusters upgraded from a version prior to v1.14.0 keep the more permissive policy by default for backwards compatibility.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Kubernetes

Kubernetes

Affected Versions:

prior to 1.13.12 prior to 1.14.8 prior to 1.15.5 prior to 1.16.2 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

XML Entity Expansion and Improper Input Validation in Kubernetes API server

GHSA-pmqp-h87c-mr78

Advisory Details

Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloads, causing the API server to consume excessive CPU or memory, potentially crashing and becoming unavailable. Prior to v1.14.0, default RBAC policy authorized anonymous users to submit requests that could trigger this vulnerability. Clusters upgraded from a version prior to v1.14.0 keep the more permissive policy by default for backwards compatibility. ### Specific Go Packages Affected k8s.io/kubernetes/pkg/apiserver

Affected Packages

Go k8s.io/kubernetes
ECOSYSTEM: ≥1.0.0 <1.13.12
Go k8s.io/kubernetes
ECOSYSTEM: ≥1.14.0 <1.14.8
Go k8s.io/kubernetes
ECOSYSTEM: ≥1.15.0 <1.15.5
Go k8s.io/kubernetes
ECOSYSTEM: ≥1.16.0 <1.16.2

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2019-11253
WEB https://github.com/kubernetes/kubernetes/issues/83253
WEB https://github.com/kubernetes/kubernetes/pull/83261
WEB https://access.redhat.com/errata/RHSA-2019:3239
WEB https://access.redhat.com/errata/RHSA-2019:3811
WEB https://access.redhat.com/errata/RHSA-2019:3905
WEB https://gist.github.com/bgeesaman/0e0349e94cd22c48bf14d8a9b7d6b8f2
WEB https://groups.google.com/forum/#!topic/kubernetes-security-announce/jk8polzSUxs
WEB https://security.netapp.com/advisory/ntap-20191031-0006

Advisory provided by GitHub Security Advisory Database. Published: May 18, 2021, Modified: September 29, 2023

References

https://github.com/kubernetes/kubernetes/issues/83253
https://groups.google.com/forum/#%21topic/kubernetes-security-announce/jk8polzSUxs
https://access.redhat.com/errata/RHSA-2019:3239
https://security.netapp.com/advisory/ntap-20191031-0006/
https://access.redhat.com/errata/RHSA-2019:3811
https://access.redhat.com/errata/RHSA-2019:3905
Published: 2019-10-17T15:40:10.154574Z
Last Modified: 2024-09-16T23:21:47.959Z
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