Vulnerability Description
The CNI portmap plugin allows containers to emulate opening a host port, forwarding that traffic to the container. Versions 1.6.0 through 1.8.0 inadvertently forward all traffic with the same destination port as the host port when the portmap plugin is configured with the nftables backend, thus ignoring the destination IP. This includes traffic not intended for the node itself, i.e. traffic to containers hosted on the node. Containers that request HostPort forwarding can intercept all traffic destined for that port. This requires that the portmap plugin be explicitly configured to use the nftables backend. This issue is fixed in version 1.9.0. To workaround, configure the portmap plugin to use the iptables backend. It does not have this vulnerability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Cni Network Plugins | >= 1.6.0, < 1.9.0 |
Related Weaknesses (CWE)
References
- https://github.com/containernetworking/plugins/pull/1210Issue TrackingPatch
- https://github.com/containernetworking/plugins/releases/tag/v1.9.0ProductRelease Notes
- https://github.com/containernetworking/plugins/security/advisories/GHSA-jv3w-x3rVendor Advisory
FAQ
What is CVE-2025-67499?
CVE-2025-67499 is a vulnerability with a CVSS score of 6.6 (MEDIUM). The CNI portmap plugin allows containers to emulate opening a host port, forwarding that traffic to the container. Versions 1.6.0 through 1.8.0 inadvertently forward all traffic with the same destina...
How severe is CVE-2025-67499?
CVE-2025-67499 has been rated MEDIUM with a CVSS base score of 6.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-67499?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Cni Network Plugins.