CVE-2019-1002100: Input Validation
First published: Tue Feb 26 2019(Updated: )
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.
Credit: josh@bress.net josh@bress.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/k8s.io/kubernetes | >=1.13.0<=1.13.3 | 1.13.4 |
| go/k8s.io/kubernetes | >=1.12.0<=1.12.5 | 1.12.6 |
| go/k8s.io/kubernetes | >=1.11.0<=1.11.7 | 1.11.8 |
| go/k8s.io/kubernetes | >=1.0<=1.10 | |
| redhat/kube-apiserver | <1.11.8 | 1.11.8 |
| redhat/kube-apiserver | <1.12.6 | 1.12.6 |
| redhat/kube-apiserver | <1.13.4 | 1.13.4 |
| redhat/atomic-openshift | <0:3.10.181-1.git.0.3ab4b3d.el7 | 0:3.10.181-1.git.0.3ab4b3d.el7 |
| redhat/atomic-openshift | <0:3.11.129-1.git.0.bd4f2d5.el7 | 0:3.11.129-1.git.0.bd4f2d5.el7 |
| redhat/jenkins | <2-plugins-0:3.11.1560870549-1.el7 | 2-plugins-0:3.11.1560870549-1.el7 |
| Kubernetes Kubernetes | <1.11.8 | |
| Kubernetes Kubernetes | >=1.12.0<1.12.6 | |
| Kubernetes Kubernetes | >=1.13.0<1.13.4 | |
| Redhat Openshift Container Platform | =3.10 | |
| Redhat Openshift Container Platform | =3.11 |
Remedy
Remove ‘patch’ permissions from untrusted users.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2019-1002100
- https://github.com/kubernetes/kubernetes/issues/74534
- https://access.redhat.com/errata/RHSA-2019:1851
- https://access.redhat.com/errata/RHSA-2019:3239
- https://groups.google.com/forum/#!topic/kubernetes-announce/vmUUNkYfG9g
- https://security.netapp.com/advisory/ntap-20190416-0002/
- https://web.archive.org/web/20210125011246/https://www.securityfocus.com/bid/107290/
- https://github.com/advisories/GHSA-q4rr-64r9-fwgf (Advisory)
- https://www.cve.org/CVERecord?id=CVE-2019-1002100 https://nvd.nist.gov/vuln/detail/CVE-2019-1002100 https://groups.google.com/forum/#!topic/kubernetes-announce/vmUUNkYfG9g
- https://bugzilla.redhat.com/show_bug.cgi?id=1683190
- https://access.redhat.com/security/cve/cve-2019-1002100
- http://www.securityfocus.com/bid/107290
- https://github.com/kubernetes/kubernetes/pull/74000
- https://github.com/kubernetes/kubernetes/commit/8a2d338b
- https://github.com/kubernetes/kubernetes/commit/8a09eb39
- https://github.com/kubernetes/kubernetes/commit/de5b047e
- https://access.redhat.com/security/updates/classification/
- https://groups.google.com/forum/#%21topic/kubernetes-announce/vmUUNkYfG9g
Frequently Asked Questions
What is the vulnerability ID for this denial of service vulnerability?
The vulnerability ID for this denial of service vulnerability is CVE-2019-1002100.
What is the severity level of CVE-2019-1002100?
The severity level of CVE-2019-1002100 is medium with a score of 6.5.
Which versions of Kubernetes are affected by CVE-2019-1002100?
All Kubernetes versions prior to v1.11.8, v1.12.6, and v1.13.4 are affected by CVE-2019-1002100.
What is the recommended remedy for CVE-2019-1002100?
The recommended remedy for CVE-2019-1002100 is to update Kubernetes to version 1.11.8, 1.12.6, or 1.13.4.
Where can I find more information about CVE-2019-1002100?
You can find more information about CVE-2019-1002100 on the NIST NVD website, the Kubernetes GitHub page, and the Red Hat errata page.
- collector/github-advisory-latest
- alias/GHSA-q4rr-64r9-fwgf
- alias/CVE-2019-1002100
- collector/github-advisory
- collector/redhat-cve
- collector/nvd-index
- collector/nvd-cve
- agent/author
- agent/type
- agent/first-publish-date
- agent/softwarecombine
- agent/severity
- agent/weakness
- agent/remedy
- agent/description
- collector/redhat-bugzilla
- source/Red Hat
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/last-modified-date
- agent/tags
- agent/event
- agent/trending
- package-manager/go
- package-manager/redhat
- vendor/kubernetes
- canonical/kubernetes kubernetes
- version/kubernetes kubernetes/1.12.0
- version/kubernetes kubernetes/1.13.0
- vendor/redhat
- canonical/redhat openshift container platform
- version/redhat openshift container platform/3.10
- version/redhat openshift container platform/3.11