RHSA-2021_3001
Vulnerability from csaf_redhat - Published: 2021-08-03 20:28 - Updated: 2024-12-17 21:13Summary
Red Hat Security Advisory: Red Hat OpenShift Container Platform for Windows Containers 3.0.0 security and bug fix update
Severity
Moderate
Notes
Topic: The components for Red Hat OpenShift Container Platform for Windows Containers 3.0.0 are now available.
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: Windows Container Support for Red Hat OpenShift allows you to deploy
Windows container workloads running on Windows Server containers.
Security Fix(es):
* containernetworking-cni: Arbitrary path injection via type field in CNI configuration (CVE-2021-20206)
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.
Bug Fix(es):
* LB service unstable with multiple Windows nodes and pods (BZ#1905950)
* WMCO patch pub-key-hash annotation to Linux node (BZ#1930791)
* kube-proxy service terminated unexpectedly after recreated LB service (BZ#1939968)
* Telemetry info not completely available to identify windows nodes (BZ#1948037)
* LoadBalancer Service type with invalid external loadbalancer IP breaks the datapath (BZ#1952914)
* WMCO incorrectly shows node as ready after a failed configuration (BZ#1953692)
* Windows pod with a Projected Volume is stuck at ContainerCreating (BZ#1971745)
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.
An improper limitation of path name flaw was found in containernetworking/cni. When specifying the plugin to load in the `type` field in the network configuration, it is possible to use special elements such as "../" separators to reference binaries elsewhere on the system. This flaw allows an attacker to execute other existing binaries other than the cni plugins/types, such as `reboot`. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
7.2 (High)
Vendor Fix
For Windows Machine Config Operator upgrades, see the following documentation:
https://docs.openshift.com/container-platform/latest/windows_containers/windows-node-upgrades.html
https://access.redhat.com/errata/RHSA-2021:3001
References
Acknowledgments
Red Hat
Casey Callendrello
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"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"version": "3.1"
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"title": "containernetworking-cni: Arbitrary path injection via type field in CNI configuration"
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}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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