CVE-2020-14336
First published: Mon Jul 13 2020(Updated: )
A flaw was found in the Restricted Security Context Constraints (SCC), where it allows pods to craft custom network packets. This flaw allows an attacker to cause a denial of service attack on an OpenShift Container Platform cluster if they can deploy pods. The highest threat from this vulnerability is to system availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat OpenShift Container Platform | =3.11 | |
| Red Hat OpenShift Container Platform | =4.5.16 | |
| Red Hat OpenShift Container Platform | =4.6 |
Remedy
On OCP 3.11 create a custom SCC based on 'restricted' and also drop the NET_RAW capability[1]. Assign this custom SCC to any users, or groups which create pods you want to protect. See the documentation for more information [2]. [1] https://access.redhat.com/solutions/5611521 [2] https://docs.openshift.com/container-platform/3.11/admin_guide/manage_scc.html
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://bugzilla.redhat.com/show_bug.cgi?id=1858981
- https://docs.docker.com/engine/reference/run/#runtime-privilege-and-linux-capabilities
- https://github.com/opencontainers/runc/blob/master/libcontainer/SPEC.md#security
- https://docs.openshift.com/container-platform/3.11/architecture/networking/network_plugins.html
- https://access.redhat.com/errata/RHSA-2020:4320
- https://access.redhat.com/security/cve/cve-2020-14336
- https://access.redhat.com/errata/RHSA-2020:4298
- https://access.redhat.com/solutions/5611521
- https://docs.openshift.com/container-platform/3.11/admin_guide/manage_scc.html
- https://www.cve.org/CVERecord?id=CVE-2020-14336 https://nvd.nist.gov/vuln/detail/CVE-2020-14336
- collector/redhat-cve
- agent/type
- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2020-14336
- agent/author
- agent/severity
- agent/references
- agent/remedy
- agent/weakness
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/trending
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/tags
- agent/softwarecombine
- agent/source
- vendor/redhat
- canonical/red hat openshift container platform
- version/red hat openshift container platform/3.11
- version/red hat openshift container platform/4.5.16
- version/red hat openshift container platform/4.6