A vulnerability was found in all versions of containernetworking/plugins before version…
Priority LOW 31CWE-300Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Partial Red Hat: 8 fixed, 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious container can exploit this flaw by sending rogue IPv6 router advertisements to the host or other containers, to redirect traffic to the malicious container.
Why it matters now
EPSS 0.02087 81st percentileScored 2026-11-07
Fix Partial github.com/containernetworking/plugins (Go): 0.8.6Red Hat: 7 advisoriesRed Hat: 8 fixed, 4 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | containernetworking/plugins | all containernetworking/plugins versions before version 0.8.6 | — | No fix listed | CNA |
| — | github.com/containernetworking/plugins (Go) | before 0.8.6 | 0.8.6 | Patch available | GHSA-fx6x-h9g4-56f8 |
- containernetworking/plugins VendorRed Hat Affected all containernetworking/plugins versions before version 0.8.6 Fixed in — No fix listed CNA
- github.com/containernetworking/plugins (Go) Vendor— Affected before 0.8.6 Fixed in 0.8.6 Patch available GHSA-fx6x-h9g4-56f8
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:linuxfoundation:cni_network_plugins:*:*:*:*:*:*:*:* | before 0.8.6 | Vulnerable | backstage |
| cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 32 | Vulnerable | Fedoraproject |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
- cpe:2.3:a:linuxfoundation:cni_network_plugins:*:*:*:*:*:*:*:* Versions before 0.8.6 Vulnerable ·backstage
- cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
Remediation
- Fix · GHSA-fx6x-h9g4-56f8 github.com/containernetworking/plugins (Go) Fixed in 0.8.6 Advisory →
Red Hat 7 advisories
- RHSA-2020:4694 Released 2020-11-04 · Red Hat rating Moderatecontainer-tools:rhel8 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) buildah-1.15.1-2.module+el8.3.0+8221+97165c3f.aarch64::container-tools:rhel8, buildah-1.15.1-2.module+el8.3.0+8221+97165c3f.ppc64le::container-tools:rhel8, buildah-1.15.1-2.module+el8.3.0+8221+97165c3f.s390x::container-tools:rhel8 +47
- RHSA-2020:3194 Released 2020-07-28 · Red Hat rating ImportantContainer-native Virtualization security, bug fix, and enhancement update
- CNV 2.4 for RHEL 8 container-native-virtualization/kubevirt-cpu-model-nfd-plugin, container-native-virtualization/kubevirt-cpu-node-labeller, container-native-virtualization/kubevirt-kvm-info-nfd-plugin +1
- RHSA-2020:2412 Released 2020-07-13 · Red Hat rating ModerateOpenShift Container Platform 4.5 container image security update
- Red Hat OpenShift Container Platform 4.5 openshift4/ose-cluster-logging-operator, openshift4/ose-console, openshift4/ose-hyperkube +2
Show 4 more Red Hat advisories
- RHSA-2020:2592 Released 2020-07-01 · Red Hat rating ModerateOpenShift Container Platform 4.2.36 containernetworking-plugins security update
- Red Hat OpenShift Container Platform 4.2 containernetworking-plugins-0.8.6-1.rhaos4.2.el7, containernetworking-plugins-0.8.6-1.rhaos4.2.el8
- RHSA-2020:2684 Released 2020-06-23 · Red Hat rating Moderatecontainernetworking-plugins security update
- Red Hat Enterprise Linux 7 Extras containernetworking-plugins-0.8.3-3.el7_8
- RHSA-2020:2403 Released 2020-06-17 · Red Hat rating ModerateOpenShift Container Platform 4.4.8 containernetworking-plugins security update
- Red Hat OpenShift Container Platform 4.4 containernetworking-plugins-0.8.6-1.rhaos4.4.el7, containernetworking-plugins-0.8.6-1.rhaos4.4.el8
- RHSA-2020:2443 Released 2020-06-17 · Red Hat rating ModerateOpenShift Container Platform 4.3.25 containernetworking-plugins security update
- Red Hat OpenShift Container Platform 4.3 containernetworking-plugins-0.8.6-1.rhaos4.3.el7, containernetworking-plugins-0.8.6-1.rhaos4.3.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Virtualization 1 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift Virtualization 2 | Affected | No fix yet |
| CNV 2.4 for RHEL 8 | Fixed | RHSA-2020:3194 |
| Red Hat Enterprise Linux 7 Extras | Fixed | RHSA-2020:2684 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:4694 |
| Red Hat OpenShift Container Platform 4.2 | Fixed | RHSA-2020:2592 |
| Red Hat OpenShift Container Platform 4.3 | Fixed | RHSA-2020:2443 |
| Red Hat OpenShift Container Platform 4.4 | Fixed | RHSA-2020:2403 |
| Red Hat OpenShift Container Platform 4.5 | Fixed | RHSA-2020:2412 |
| Red Hat OpenShift Container Platform 4.7 | Fixed | RHSA-2020:5633 |
Not affected: 4 products
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Container Platform 3.11
- Red Hat OpenShift Container Platform 4.5
- Red Hat OpenShift Container Platform 4.7
Timeline
- 2026-10-02 Threatist record created from CVE-2020-10749
- 2026-10-03 Alias added: GHSA-fx6x-h9g4-56f8
References
Advisory 5
Other 5
- https://groups.google.com/forum/#%21topic/kubernetes-security-announce/BMb_6ICCfp8
- https://github.com/containernetworking/plugins
- https://github.com/containernetworking/plugins/releases/tag/v0.8.6
- https://groups.google.com/forum/#!topic/kubernetes-security-announce/BMb_6ICCfp8
- https://lists.fedoraproject.org/archives/list/[email protected]/message/DV3HCDZYUTPPVDUMTZXDKK6IUO3JMGJC
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Sources
- CVE-2020-10749 · CVE Program
- CVE-2020-10749 · NVD
- FIRST EPSS
- GHSA-fx6x-h9g4-56f8 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-10749 · Red Hat security data · CC BY 4.0
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