RHSA-2020:0933

Vulnerability from csaf_redhat - Published: 2020-04-01 18:50 - Updated: 2026-03-27 06:49
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.3.9 ose-openshift-apiserver-container security update
Severity
Moderate
Notes
Topic: An update for ose-openshift-apiserver-container is now available for Red Hat OpenShift Container Platform 4.3. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. Security Fix(es): * kubernetes: Use of unbounded 'client' label in apiserver_request_total allowed for memory exhaustion (CVE-2020-8552) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2019-11254

The Kubernetes API Server component in versions 1.1-1.14, and versions prior to 1.15.10, 1.16.7 and 1.17.3 allows an authorized user who sends malicious YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML.

6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-400 - Uncontrolled Resource Consumption
Affected products
Product Identifier Version Remediation
Unresolved product id: 7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2020-8552

A denial of service vulnerability was found in the Kubernetes API server. This flaw allows a remote attacker to send repeated, crafted HTTP requests to exhaust available memory and cause a crash.

4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE-400 - Uncontrolled Resource Consumption
Affected products
Product Identifier Version Remediation
Unresolved product id: 7Server-RH7-RHOSE-4.3:openshift4/ose-openshift-apiserver-rhel7@sha256:1bebc10fd956168ec31e45ce2d3753f215b59a533c834d41c6f83eca4db2da84_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
References
Acknowledgments
Kubernetes Product Security Committee
Amazon Gus Lees
To clipboard 

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      ],
      "title": "kubernetes: Use of unbounded \u0027client\u0027 label in apiserver_request_total allows for memory exhaustion"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.