What’s Vulnerable › Vulnerabilities

CVE-2020-10749

• Severity: medium (CVSS 6.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-03 · updated 2026-06-17
• Weakness: CWE-300

Description

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.

Affected products

• Fedoraproject Fedora: 32
• containernetworking plugins: before 0.8.6 — fixed in 0.8.6
• Red Hat Enterprise Linux: 7.0, 8.0
• Red Hat OpenShift Container Platform 4.18: 4.0

How to fix

Upgrade to a fixed version: containernetworking plugins 0.8.6. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00063.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00065.html
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10749
• https://groups.google.com/forum/#%21topic/kubernetes-security-announce/BMb_6ICCfp8
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DV3HCDZYUTPPVDUMTZXDKK6IUO3JMGJC/
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00063.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00065.html
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10749
• https://groups.google.com/forum/#%21topic/kubernetes-security-announce/BMb_6ICCfp8
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DV3HCDZYUTPPVDUMTZXDKK6IUO3JMGJC/

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