| Name | CVE-2021-25736 |
| Description | Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| kubernetes (PTS) | bullseye | 1.20.5+really1.20.2-1 | fixed |
| bookworm | 1.20.5+really1.20.2-1.1+deb12u1 | fixed |
| forky, trixie | 1.32.3+ds-2 | fixed |
| sid | 1.33.4+ds-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| kubernetes | source | (unstable) | (not affected) | | | |
Notes
- kubernetes <not-affected> (Windows-specific)