High severity · published Oct 17, 2019
CVE-2019-11253
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…
7.5
CVSS
25.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)25.9% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KU
Kubernetes · Kubernetes
1.1.0 through 1.12.10; 1.13.0 before 1.13.12; 1.14.0 before 1.14.8; 1.15.0 before 1.15.5; 1.16.0 before 1.16.2 · source: NVD
OC
Openshift Container Platform · Redhat
3.9; 3.10; 3.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-11253
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-11253
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3239
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3811
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3905
Exploit
https://github.com/kubernetes/kubernetes/issues/83253
Permissions Required
https://groups.google.com/forum/#%21topic/kubernetes-security-announce/jk8polzSUxs
Third Party Advisory
https://security.netapp.com/advisory/ntap-20191031-0006/
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